Alright, let's work through 89979970 times 88349580 step by step
89979970 × 88349580 = 88349580 × (89979970)
+ 88349580 × 0 yielding 0
+ 88349580 × 70 producing 6184470600
+ 88349580 × 900 that is equal 79514622000
+ 88349580 × 9000 that equals 795146220000
+ 88349580 × 70000 what gives us 6184470600000
+ 88349580 × 900000 resulting in 79514622000000
+ 88349580 × 9000000 that results in 795146220000000
+ 88349580 × 80000000 resulting in 7067966400000000

= 7949692557912600
