No problem, we've got 8931 and 2100 to multiply
8931 × 2100 = 2100 × (8931)
+ 2100 × 1 giving us 2100
+ 2100 × 30 that is equal 63000
+ 2100 × 900 which equals 1890000
+ 2100 × 8000 which equals 16800000

= 18755100
