Alright, let's work through 69986473 times 81913023 step by step
69986473 × 81913023 = 81913023 × (69986473)
+ 81913023 × 3 that equals 245739069
+ 81913023 × 70 giving us 5733911610
+ 81913023 × 400 yielding 32765209200
+ 81913023 × 6000 resulting in 491478138000
+ 81913023 × 80000 that equals 6553041840000
+ 81913023 × 900000 yielding 73721720700000
+ 81913023 × 9000000 giving us 737217207000000
+ 81913023 × 60000000 what gives us 4914781380000000

= 5732803572537879
