No problem, we've got 81092231 and 48126448 to multiply
81092231 × 48126448 = 48126448 × (81092231)
+ 48126448 × 1 yielding 48126448
+ 48126448 × 30 that equals 1443793440
+ 48126448 × 200 giving us 9625289600
+ 48126448 × 2000 that results in 96252896000
+ 48126448 × 90000 yielding 4331380320000
+ 48126448 × 000000 what gives us 0
+ 48126448 × 1000000 giving us 48126448000000
+ 48126448 × 80000000 that equals 3850115840000000

= 3902681038425488
