No problem, we've got 8408 and 2640 to multiply
8408 × 2640 = 2640 × (8408)
+ 2640 × 8 that results in 21120
+ 2640 × 00 yielding 0
+ 2640 × 400 that equals 1056000
+ 2640 × 8000 resulting in 21120000

= 22197120
