No problem, we've got 1360 and 6690 to multiply
1360 × 6690 = 6690 × (1360)
+ 6690 × 0 which equals 0
+ 6690 × 60 giving us 401400
+ 6690 × 300 resulting in 2007000
+ 6690 × 1000 yielding 6690000

= 9098400
