No problem, we've got 45421688 and 17391455 to multiply
45421688 × 17391455 = 17391455 × (45421688)
+ 17391455 × 8 what gives us 139131640
+ 17391455 × 80 that equals 1391316400
+ 17391455 × 600 which equals 10434873000
+ 17391455 × 1000 producing 17391455000
+ 17391455 × 20000 yielding 347829100000
+ 17391455 × 400000 what gives us 6956582000000
+ 17391455 × 5000000 resulting in 86957275000000
+ 17391455 × 40000000 that is equal 695658200000000

= 789949242876040
