Alright, let's work through 97415724 times 99809123 step by step
97415724 × 99809123 = 99809123 × (97415724)
+ 99809123 × 4 which equals 399236492
+ 99809123 × 20 that equals 1996182460
+ 99809123 × 700 giving us 69866386100
+ 99809123 × 5000 that results in 499045615000
+ 99809123 × 10000 what gives us 998091230000
+ 99809123 × 400000 that is equal 39923649200000
+ 99809123 × 7000000 that results in 698663861000000
+ 99809123 × 90000000 giving us 8982821070000000

= 9722977978850052
