No problem, we've got 2136 and 1690 to multiply
2136 × 1690 = 1690 × (2136)
+ 1690 × 6 resulting in 10140
+ 1690 × 30 that results in 50700
+ 1690 × 100 which equals 169000
+ 1690 × 2000 which equals 3380000

= 3609840
