Alright, let's work through 87915948 times 79462199 step by step
87915948 × 79462199 = 79462199 × (87915948)
+ 79462199 × 8 that equals 635697592
+ 79462199 × 40 which equals 3178487960
+ 79462199 × 900 that equals 71515979100
+ 79462199 × 5000 that results in 397310995000
+ 79462199 × 10000 which equals 794621990000
+ 79462199 × 900000 that results in 71515979100000
+ 79462199 × 7000000 that results in 556235393000000
+ 79462199 × 80000000 what gives us 6356975920000000

= 6985994555249652
