3.4X5.3+5.9X4.7+2.5X5.3
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3.4X5.3+5.9X4.7+2.5X5.3=3.4X5.3+2.5X5.3+5.9X4.7=(3.4+2.5)X5.3+5.9X4.7=5.9X5.3+5.9X4.7=(5.3+4.7)X5.9=10x5.9=59