No problem, we've got 81237924 and 45464748 to multiply
81237924 × 45464748 = 45464748 × (81237924)
+ 45464748 × 4 what gives us 181858992
+ 45464748 × 20 resulting in 909294960
+ 45464748 × 900 what gives us 40918273200
+ 45464748 × 7000 which equals 318253236000
+ 45464748 × 30000 yielding 1363942440000
+ 45464748 × 200000 yielding 9092949600000
+ 45464748 × 1000000 that equals 45464748000000
+ 45464748 × 80000000 producing 3637179840000000

= 3693461742703152
