Alright, let's work through 55720685 times 86828326 step by step
55720685 × 86828326 = 86828326 × (55720685)
+ 86828326 × 5 that is equal 434141630
+ 86828326 × 80 that is equal 6946266080
+ 86828326 × 600 resulting in 52096995600
+ 86828326 × 0000 that is equal 0
+ 86828326 × 20000 that results in 1736566520000
+ 86828326 × 700000 which equals 60779828200000
+ 86828326 × 5000000 which equals 434141630000000
+ 86828326 × 50000000 producing 4341416300000000

= 4838133802123310
