No problem, we've got 2159 and 4245 to multiply
2159 × 4245 = 4245 × (2159)
+ 4245 × 9 that is equal 38205
+ 4245 × 50 which equals 212250
+ 4245 × 100 giving us 424500
+ 4245 × 2000 producing 8490000

= 9164955
