Alright, let's work through 80661940 times 69142295 step by step
80661940 × 69142295 = 69142295 × (80661940)
+ 69142295 × 0 that equals 0
+ 69142295 × 40 yielding 2765691800
+ 69142295 × 900 that is equal 62228065500
+ 69142295 × 1000 yielding 69142295000
+ 69142295 × 60000 which equals 4148537700000
+ 69142295 × 600000 producing 41485377000000
+ 69142295 × 0000000 resulting in 0
+ 69142295 × 80000000 which equals 5531383600000000

= 5577151650752300
