a scale 6 ft . 8 inches long is divided into 5 equal parts . find the length of each part .
"explanation : total length of scale in inches = ( 6 * 12 ) + 8 = 80 inches length of each of the 5 parts = 80 / 5 = 16 inches answer : c"
divide(add(multiply(6, const_12), 8), 5)