Alright, let's work through 80237263 times 85202577 step by step
80237263 × 85202577 = 85202577 × (80237263)
+ 85202577 × 3 resulting in 255607731
+ 85202577 × 60 resulting in 5112154620
+ 85202577 × 200 that equals 17040515400
+ 85202577 × 7000 that is equal 596418039000
+ 85202577 × 30000 yielding 2556077310000
+ 85202577 × 200000 resulting in 17040515400000
+ 85202577 × 0000000 producing 0
+ 85202577 × 80000000 which equals 6816206160000000

= 6836421579026751
