Alright, let's work through 20155805 times 84846453 step by step
20155805 × 84846453 = 84846453 × (20155805)
+ 84846453 × 5 giving us 424232265
+ 84846453 × 00 that results in 0
+ 84846453 × 800 giving us 67877162400
+ 84846453 × 5000 which equals 424232265000
+ 84846453 × 50000 giving us 4242322650000
+ 84846453 × 100000 what gives us 8484645300000
+ 84846453 × 0000000 that results in 0
+ 84846453 × 20000000 resulting in 1696929060000000

= 1710148561609665
