No problem, we've got 81984346 and 51054754 to multiply
81984346 × 51054754 = 51054754 × (81984346)
+ 51054754 × 6 that results in 306328524
+ 51054754 × 40 producing 2042190160
+ 51054754 × 300 resulting in 15316426200
+ 51054754 × 4000 that equals 204219016000
+ 51054754 × 80000 that equals 4084380320000
+ 51054754 × 900000 that results in 45949278600000
+ 51054754 × 1000000 that is equal 51054754000000
+ 51054754 × 80000000 giving us 4084380320000000

= 4185690616880884
