No problem, we've got 8243984 and 65990378 to multiply
8243984 × 65990378 = 65990378 × (8243984)
+ 65990378 × 4 giving us 263961512
+ 65990378 × 80 yielding 5279230240
+ 65990378 × 900 resulting in 59391340200
+ 65990378 × 3000 what gives us 197971134000
+ 65990378 × 40000 what gives us 2639615120000
+ 65990378 × 200000 yielding 13198075600000
+ 65990378 × 8000000 what gives us 527923024000000

= 544023620385952
