No problem, we've got 2255 and 1639 to multiply
2255 × 1639 = 1639 × (2255)
+ 1639 × 5 that results in 8195
+ 1639 × 50 what gives us 81950
+ 1639 × 200 that results in 327800
+ 1639 × 2000 that is equal 3278000

= 3695945
