Alright, let's work through 73828528 times 53664453 step by step
73828528 × 53664453 = 53664453 × (73828528)
+ 53664453 × 8 that is equal 429315624
+ 53664453 × 20 which equals 1073289060
+ 53664453 × 500 which equals 26832226500
+ 53664453 × 8000 that is equal 429315624000
+ 53664453 × 20000 giving us 1073289060000
+ 53664453 × 800000 giving us 42931562400000
+ 53664453 × 3000000 yielding 160993359000000
+ 53664453 × 70000000 what gives us 3756511710000000

= 3961967570915184
