No problem, we've got 73505461 and 73120563 to multiply
73505461 × 73120563 = 73120563 × (73505461)
+ 73120563 × 1 resulting in 73120563
+ 73120563 × 60 giving us 4387233780
+ 73120563 × 400 giving us 29248225200
+ 73120563 × 5000 that is equal 365602815000
+ 73120563 × 00000 giving us 0
+ 73120563 × 500000 producing 36560281500000
+ 73120563 × 3000000 what gives us 219361689000000
+ 73120563 × 70000000 yielding 5118439410000000

= 5374760691894543
