No problem, we've got 6638 and 9156 to multiply
6638 × 9156 = 9156 × (6638)
+ 9156 × 8 what gives us 73248
+ 9156 × 30 resulting in 274680
+ 9156 × 600 that results in 5493600
+ 9156 × 6000 that results in 54936000

= 60777528
