<<< native
[ EIdentifier "S"
, ESymbol Rel "="
, ESymbol Open "{"
, ENumber "0"
, ESymbol Rel "\8804"
, EIdentifier "\981"
, ESymbol Rel "\8804"
, ENumber "2"
, EIdentifier "\960"
, ESymbol Pun ","
, ESpace (2 % 9)
, ENumber "0"
, ESymbol Rel "\8804"
, EIdentifier "\952"
, ESymbol Rel "\8804"
, EIdentifier "\960"
, ESymbol Pun ","
, ESpace (2 % 9)
, ENumber "0"
, ESymbol Rel "\8804"
, EIdentifier "\961"
, ESymbol Rel "\8804"
, EIdentifier "R"
, ESymbol Close "}"
, EArray
    [ AlignRight , AlignLeft ]
    [ [ [ EStyled
            TextNormal
            [ EIdentifier "V"
            , EIdentifier "o"
            , EIdentifier "l"
            , EIdentifier "u"
            , EIdentifier "m"
            , EIdentifier "e"
            ]
        ]
      , [ ESymbol Rel "="
        , EUnder False (ESymbol Op "\8749") (EIdentifier "S")
        , ESpace ((-1) % 6)
        , ESuper (EIdentifier "\961") (ENumber "2")
        , EMathOperator "sin"
        , EIdentifier "\952"
        , ESpace (1 % 6)
        , EStyled TextNormal [ EIdentifier "d" ]
        , EIdentifier "\961"
        , ESpace (1 % 6)
        , EStyled TextNormal [ EIdentifier "d" ]
        , EIdentifier "\952"
        , ESpace (1 % 6)
        , EStyled TextNormal [ EIdentifier "d" ]
        , EIdentifier "\981"
        ]
      ]
    , [ []
      , [ ESymbol Rel "="
        , ESubsup
            (ESymbol Op "\8747")
            (ENumber "0")
            (EGrouped [ ENumber "2" , EIdentifier "\960" ])
        , ESpace ((-1) % 6)
        , EStyled TextNormal [ EIdentifier "d" ]
        , EIdentifier "\981"
        , ESpace (1 % 6)
        , ESubsup (ESymbol Op "\8747") (ENumber "0") (EIdentifier "\960")
        , ESpace ((-1) % 6)
        , EMathOperator "sin"
        , EIdentifier "\952"
        , ESpace (1 % 6)
        , EStyled TextNormal [ EIdentifier "d" ]
        , EIdentifier "\952"
        , ESpace (1 % 6)
        , ESubsup (ESymbol Op "\8747") (ENumber "0") (EIdentifier "R")
        , ESpace ((-1) % 6)
        , ESuper (EIdentifier "\961") (ENumber "2")
        , EStyled TextNormal [ EIdentifier "d" ]
        , EIdentifier "\961"
        ]
      ]
    , [ []
      , [ ESymbol Rel "="
        , EIdentifier "\981"
        , ESubsup
            (EScaled (9 % 5) (ESymbol Open "|"))
            (ENumber "0")
            (EGrouped [ ENumber "2" , EIdentifier "\960" ])
        , ESpace (2 % 9)
        , EDelimited
            "("
            ")"
            [ Right (ESymbol Op "\8722")
            , Right (EMathOperator "cos")
            , Right (EIdentifier "\952")
            ]
        , ESubsup
            (EScaled (9 % 5) (ESymbol Open "|"))
            (ENumber "0")
            (EIdentifier "\960")
        , ESpace (2 % 9)
        , EFraction InlineFrac (ENumber "1") (ENumber "3")
        , ESuper (EIdentifier "\961") (ENumber "3")
        , ESubsup
            (EScaled (9 % 5) (ESymbol Open "|"))
            (ENumber "0")
            (EIdentifier "R")
        ]
      ]
    , [ []
      , [ ESymbol Rel "="
        , ENumber "2"
        , EIdentifier "\960"
        , ESymbol Bin "\215"
        , ENumber "2"
        , ESymbol Bin "\215"
        , EFraction InlineFrac (ENumber "1") (ENumber "3")
        , ESuper (EIdentifier "R") (ENumber "3")
        ]
      ]
    , [ []
      , [ ESymbol Rel "="
        , EFraction InlineFrac (ENumber "4") (ENumber "3")
        , EIdentifier "\960"
        , ESuper (EIdentifier "R") (ENumber "3")
        ]
      ]
    ]
]
>>> typst
S = { 0 lt.eq phi.alt lt.eq 2 pi , med 0 lt.eq theta lt.eq pi , med 0 lt.eq rho lt.eq R } upright(V o l u m e) & = integral.triple_S #h(-1em) rho^2 sin theta thin upright(d) rho thin upright(d) theta thin upright(d) phi.alt\
 & = integral_0^(2 pi) #h(-1em) upright(d) phi.alt thin integral_0^pi #h(-1em) sin theta thin upright(d) theta thin integral_0^R #h(-1em) rho^2 upright(d) rho\
 & = phi.alt #scale(x: 180%, y: 180%)[\|]_0^(2 pi) med (- cos theta) #scale(x: 180%, y: 180%)[\|]_0^pi med 1 / 3 rho^3 #scale(x: 180%, y: 180%)[\|]_0^R\
 & = 2 pi times 2 times 1 / 3 R^3\
 & = 4 / 3 pi R^3