Line 86 "·a+sumsq(3,2+2)*sqrt(36)/2"
Line 88 "a·+sumsq(3,2+2)*sqrt(36)/2" value=a
Line 93 "a+·sumsq(3,2+2)*sqrt(36)/2" op=+
Line 86 "a+·sumsq(3,2+2)*sqrt(36)/2"
Line 86 "a+sumsq(·3,2+2)*sqrt(36)/2"
Line 88 "a+sumsq(3·,2+2)*sqrt(36)/2" value=3
Line 86 "a+sumsq(3,·2+2)*sqrt(36)/2"
Line 88 "a+sumsq(3,2·+2)*sqrt(36)/2" value=2
Line 93 "a+sumsq(3,2+·2)*sqrt(36)/2" op=+
Line 86 "a+sumsq(3,2+·2)*sqrt(36)/2"
Line 88 "a+sumsq(3,2+2·)*sqrt(36)/2" value=2
Line 100 "a+sumsq(3,2+2·)*sqrt(36)/2" popping 2 +
Line 102 "a+sumsq(3,2+2·)*sqrt(36)/2" result = sum(2, 2)
Line 142 "a+sumsq(3,2+2)·*sqrt(36)/2" function 'sumsq' called with 2 arguments
Line 88 "a+sumsq(3,2+2)·*sqrt(36)/2" value=sumsq(3, sum(2, 2))
Line 93 "a+sumsq(3,2+2)*·sqrt(36)/2" op=*
Line 86 "a+sumsq(3,2+2)*·sqrt(36)/2"
Line 86 "a+sumsq(3,2+2)*sqrt(·36)/2"
Line 88 "a+sumsq(3,2+2)*sqrt(36·)/2" value=36
Line 142 "a+sumsq(3,2+2)*sqrt(36)·/2" function 'sqrt' called with 1 argument
Line 88 "a+sumsq(3,2+2)*sqrt(36)·/2" value=sqrt(36)
Line 93 "a+sumsq(3,2+2)*sqrt(36)/·2" op=/
Line 100 "a+sumsq(3,2+2)*sqrt(36)/·2" popping sumsq(3, sum(2, 2)) *
Line 102 "a+sumsq(3,2+2)*sqrt(36)/·2" result = mul(sumsq(3, sum(2, 2)), sqrt(36))
Line 86 "a+sumsq(3,2+2)*sqrt(36)/·2"
Line 88 "a+sumsq(3,2+2)*sqrt(36)/2·" value=2
Line 100 "a+sumsq(3,2+2)*sqrt(36)/2·" popping mul(sumsq(3, sum(2, 2)), sqrt(36)) /
Line 102 "a+sumsq(3,2+2)*sqrt(36)/2·" result = div(mul(sumsq(3, sum(2, 2)), sqrt(36)), 2)
Line 100 "a+sumsq(3,2+2)*sqrt(36)/2·" popping a +
Line 102 "a+sumsq(3,2+2)*sqrt(36)/2·" result = sum(a, div(mul(sumsq(3, sum(2, 2)), sqrt(36)), 2))

source: a+sumsq(3,2+2)*sqrt(36)/2
Dumped:
$VAR1 = bless( {
  'function' => 'sum',
  'arguments' => [
    bless( do{\(my $o = 'a')}, 'Var' ),
    bless( {
      'function' => 'div',
      'arguments' => [
        bless( {
          'function' => 'mul',
          'arguments' => [
            bless( {
              'function' => 'sumsq',
              'arguments' => [
                '3',
                bless( {
                  'function' => 'sum',
                  'arguments' => [
                    '2',
                    '2'
                  ]
                }, 'Function' )
              ]
            }, 'Function' ),
            bless( {
              'function' => 'sqrt',
              'arguments' => [
                '36'
              ]
            }, 'Function' )
          ]
        }, 'Function' ),
        '2'
      ]
    }, 'Function' )
  ]
}, 'Function' );
Stringified: sum(a, div(mul(sumsq(3, sum(2, 2)), sqrt(36)), 2))
Numerified with a=101: 176
Numerified with a=25: 100