Alright, let's work through 84380532 times 20900666 step by step
84380532 × 20900666 = 20900666 × (84380532)
+ 20900666 × 2 which equals 41801332
+ 20900666 × 30 giving us 627019980
+ 20900666 × 500 that results in 10450333000
+ 20900666 × 0000 resulting in 0
+ 20900666 × 80000 producing 1672053280000
+ 20900666 × 300000 resulting in 6270199800000
+ 20900666 × 4000000 yielding 83602664000000
+ 20900666 × 80000000 resulting in 1672053280000000

= 1763609316234312
