layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x156
  RenderBlock {HTML} at (0,0) size 800x156
    RenderBody {BODY} at (8,16) size 784x124
      RenderBlock {P} at (0,0) size 784x25
        RenderMathMLMath {math} at (0,2) size 10x23
          RenderMathMLRow {mstyle} at (0,0) size 10x23
            RenderMathMLUnderOver {mover} at (0,0) size 10x23
              RenderMathMLOperator {mo} at (0,1) size 10x22
                RenderBlock (anonymous) at (0,0) size 1x3
                  RenderText {#text} at (0,-4) size 1x0
                    text run at (0,-4) width 1: "\x{219C}"
              RenderMathMLSpace {mspace} at (1,0) size 8x1
        RenderText {#text} at (0,0) size 0x0
      RenderBlock {P} at (0,41) size 784x24
        RenderMathMLMath {math} at (0,2) size 20x22
          RenderMathMLRow {mstyle} at (0,0) size 20x22
            RenderMathMLUnderOver {mover} at (0,0) size 20x22
              RenderMathMLOperator {mo} at (0,1) size 20x21
                RenderBlock (anonymous) at (0,0) size 1x3
                  RenderText {#text} at (0,-4) size 1x0
                    text run at (0,-4) width 1: "\x{219C}"
              RenderMathMLSpace {mspace} at (2,0) size 16x1
        RenderText {#text} at (0,0) size 0x0
      RenderBlock {P} at (0,81) size 784x43
        RenderMathMLMath {math} at (0,0) size 150x43
          RenderMathMLRow {mstyle} at (0,0) size 150x43
            RenderMathMLUnderOver {mover} at (0,0) size 150x43
              RenderMathMLOperator {mo} at (0,1) size 150x42
                RenderBlock (anonymous) at (0,0) size 1x3
                  RenderText {#text} at (0,-4) size 1x0
                    text run at (0,-4) width 1: "\x{219C}"
              RenderMathMLSpace {mspace} at (0,0) size 150x1
        RenderText {#text} at (0,0) size 0x0