No problem, we've got 81536490 and 48873449 to multiply
81536490 × 48873449 = 48873449 × (81536490)
+ 48873449 × 0 that equals 0
+ 48873449 × 90 yielding 4398610410
+ 48873449 × 400 giving us 19549379600
+ 48873449 × 6000 which equals 293240694000
+ 48873449 × 30000 yielding 1466203470000
+ 48873449 × 500000 which equals 24436724500000
+ 48873449 × 1000000 which equals 48873449000000
+ 48873449 × 80000000 resulting in 3909875920000000

= 3984969485654010
