Alright, let's work through 99897314 times 71390318 step by step
99897314 × 71390318 = 71390318 × (99897314)
+ 71390318 × 4 that equals 285561272
+ 71390318 × 10 that equals 713903180
+ 71390318 × 300 that results in 21417095400
+ 71390318 × 7000 giving us 499732226000
+ 71390318 × 90000 producing 6425128620000
+ 71390318 × 800000 that equals 57112254400000
+ 71390318 × 9000000 that equals 642512862000000
+ 71390318 × 90000000 yielding 6425128620000000

= 7131701013805852
