No problem, we've got 5285 and 3656 to multiply
5285 × 3656 = 3656 × (5285)
+ 3656 × 5 what gives us 18280
+ 3656 × 80 which equals 292480
+ 3656 × 200 that results in 731200
+ 3656 × 5000 that results in 18280000

= 19321960
