Alright, let's work through 99145641 times 99729686 step by step
99145641 × 99729686 = 99729686 × (99145641)
+ 99729686 × 1 which equals 99729686
+ 99729686 × 40 yielding 3989187440
+ 99729686 × 600 what gives us 59837811600
+ 99729686 × 5000 that is equal 498648430000
+ 99729686 × 40000 giving us 3989187440000
+ 99729686 × 100000 giving us 9972968600000
+ 99729686 × 9000000 that results in 897567174000000
+ 99729686 × 90000000 resulting in 8975671740000000

= 9887763645198726
