No problem, we've got 2640 and 7073 to multiply
2640 × 7073 = 7073 × (2640)
+ 7073 × 0 that equals 0
+ 7073 × 40 what gives us 282920
+ 7073 × 600 that equals 4243800
+ 7073 × 2000 that is equal 14146000

= 18672720
