Alright, let's work through 80951157 times 80723612 step by step
80951157 × 80723612 = 80723612 × (80951157)
+ 80723612 × 7 that is equal 565065284
+ 80723612 × 50 producing 4036180600
+ 80723612 × 100 which equals 8072361200
+ 80723612 × 1000 what gives us 80723612000
+ 80723612 × 50000 resulting in 4036180600000
+ 80723612 × 900000 that results in 72651250800000
+ 80723612 × 0000000 that equals 0
+ 80723612 × 80000000 which equals 6457888960000000

= 6534669788619084
