No problem, we've got 2163 and 8187 to multiply
2163 × 8187 = 8187 × (2163)
+ 8187 × 3 giving us 24561
+ 8187 × 60 that equals 491220
+ 8187 × 100 what gives us 818700
+ 8187 × 2000 that is equal 16374000

= 17708481
