Alright, let's work through 98976873 times 10105383 step by step
98976873 × 10105383 = 10105383 × (98976873)
+ 10105383 × 3 producing 30316149
+ 10105383 × 70 resulting in 707376810
+ 10105383 × 800 yielding 8084306400
+ 10105383 × 6000 that results in 60632298000
+ 10105383 × 70000 yielding 707376810000
+ 10105383 × 900000 yielding 9094844700000
+ 10105383 × 8000000 that is equal 80843064000000
+ 10105383 × 90000000 yielding 909484470000000

= 1000199209807359
