No problem, we've got 2187 and 9105 to multiply
2187 × 9105 = 9105 × (2187)
+ 9105 × 7 resulting in 63735
+ 9105 × 80 what gives us 728400
+ 9105 × 100 that is equal 910500
+ 9105 × 2000 yielding 18210000

= 19912635
