Simple calculation: 0.627 × 13 + 0.52 × 62.7 + 3.5 × 6.27
0.627×13+0.52×62.7+3.5×6.27
=6.27*1.3+6.27*5.2+6.27*3.5
=6.27*(1.3+5.2+3.5)
=6.27*10
=62.7
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