how many figures are required to number the pages the pages of a book containing 1210 pages ?
"1 to 9 = 9 * 1 = 9 10 to 99 = 90 * 2 = 180 100 to 999 = 900 * 3 = 2700 1000 to 1210 = 211 * 4 = 844 - - - - - - - - - - - 3733 answer : e"
add(add(subtract(divide(divide(1210, const_10), const_10), const_1), subtract(subtract(divide(1210, const_10), const_1), subtract(divide(divide(1210, const_10), const_10), const_1))), multiply(subtract(subtract(1210, const_1), subtract(divide(1210, const_10), const_1)), const_3))