No problem, we've got 8155 and 2435 to multiply
8155 × 2435 = 2435 × (8155)
+ 2435 × 5 which equals 12175
+ 2435 × 50 giving us 121750
+ 2435 × 100 yielding 243500
+ 2435 × 8000 that results in 19480000

= 19857425
