(5-3x12/(5x5+15)+(3x0+40))x(5x5x3/15)

$$\\ \left[ 5-{3\times12\over(5\times5+15)} +(3\times0+40) \right] \times(5\times5 \times{3\over15} )\\\\ =(5-{36\over40}+40})\times(5\times {15\over15})\\\\ =(45-{9\over10}})\times5\\\\ =45\times5-{45\over10}}\\\\ =225-4.5\\\\ =220.5$$