Alright, let's work through 80380245 times 10543120 step by step
80380245 × 10543120 = 10543120 × (80380245)
+ 10543120 × 5 that equals 52715600
+ 10543120 × 40 that equals 421724800
+ 10543120 × 200 which equals 2108624000
+ 10543120 × 0000 yielding 0
+ 10543120 × 80000 that equals 843449600000
+ 10543120 × 300000 what gives us 3162936000000
+ 10543120 × 0000000 that is equal 0
+ 10543120 × 80000000 producing 843449600000000

= 847458568664400
