how many multiples of 7 are there between 14 and 343 , exclusive ?
"7 * 2 = 14 7 * 49 = 343 total multiples = ( 49 - 2 ) + 1 = 48 exclude 7 343 = 48 - 2 = 46 answer is ( c )"
add(divide(subtract(343, 14), 7), const_1)