"10 + 20 = ?", 30
"99 * 99 = ?", 9801
"5 * 5 = ?", 25
"25 * 25 = ?", 625
"1 + 2 + 3 + 4 = ?", 10
"1 * 2 * 3 * 4 * 5 = ?", 120
"777 + 333 = ?", 1110
"0 * 1 * 2 + 3 * 4 * 5 = ?", 60
"3 + 5 = ?", 15
"1 + 2 * 3 - 4 = ?", 3