No problem, we've got 4108 and 4912 to multiply
4108 × 4912 = 4912 × (4108)
+ 4912 × 8 which equals 39296
+ 4912 × 00 that is equal 0
+ 4912 × 100 that is equal 491200
+ 4912 × 4000 resulting in 19648000

= 20178496
