Alright, let's work through 80494714 times 66538318 step by step
80494714 × 66538318 = 66538318 × (80494714)
+ 66538318 × 4 which equals 266153272
+ 66538318 × 10 which equals 665383180
+ 66538318 × 700 giving us 46576822600
+ 66538318 × 4000 yielding 266153272000
+ 66538318 × 90000 resulting in 5988448620000
+ 66538318 × 400000 resulting in 26615327200000
+ 66538318 × 0000000 that equals 0
+ 66538318 × 80000000 that is equal 5323065440000000

= 5355982877451052
