the unit digit in the product 1258 * 6754 * 4512 * 9783 is ?
"unit digit in the given product = unit digit in 8 * 4 * 2 * 3 = 2 answer is c"
subtract(multiply(multiply(multiply(1258, 6754), 4512), 9783), subtract(multiply(multiply(multiply(1258, 6754), 4512), 9783), add(const_4, const_4)))