[84+60×100÷(7×2+3×2)-14]÷[(40-5×2)+(75-4×17)]
[84+60×100÷(14+6)-14]÷[(40-10)+(75-68)]
[84+60×100÷20-14]÷[30+7]
[84+6000÷20-14]÷[30+7]
[84+300-14]÷[30+7]
370÷37=10
47502÷[17+23×3-(34÷2+123÷3)+10×5+9]-123
47502÷[17+23×3-(17+41)+10×5+9]-123
47502÷[17+23×3-58+10×5+9]-123
47502÷[17+69-58+10×5+9]-123
47502÷[17+69-58+50+9]-123
47502÷[86-58+59]-123
47502÷87-123
546-123=423