No problem, we've got 78487004 and 64739305 to multiply
78487004 × 64739305 = 64739305 × (78487004)
+ 64739305 × 4 yielding 258957220
+ 64739305 × 00 that equals 0
+ 64739305 × 000 giving us 0
+ 64739305 × 7000 that equals 453175135000
+ 64739305 × 80000 that is equal 5179144400000
+ 64739305 × 400000 producing 25895722000000
+ 64739305 × 8000000 that results in 517914440000000
+ 64739305 × 70000000 producing 4531751350000000

= 5081194090492220
