Alright, let's work through 79888979 times 81468877 step by step
79888979 × 81468877 = 81468877 × (79888979)
+ 81468877 × 9 yielding 733219893
+ 81468877 × 70 giving us 5702821390
+ 81468877 × 900 what gives us 73321989300
+ 81468877 × 8000 yielding 651751016000
+ 81468877 × 80000 producing 6517510160000
+ 81468877 × 800000 producing 65175101600000
+ 81468877 × 9000000 what gives us 733219893000000
+ 81468877 × 70000000 that equals 5702821390000000

= 6508465403806583
