No problem, we've got 8215 and 2499 to multiply
8215 × 2499 = 2499 × (8215)
+ 2499 × 5 that results in 12495
+ 2499 × 10 that equals 24990
+ 2499 × 200 yielding 499800
+ 2499 × 8000 what gives us 19992000

= 20529285
