Alright, let's work through 97979257 times 80530967 step by step
97979257 × 80530967 = 80530967 × (97979257)
+ 80530967 × 7 yielding 563716769
+ 80530967 × 50 giving us 4026548350
+ 80530967 × 200 which equals 16106193400
+ 80530967 × 9000 yielding 724778703000
+ 80530967 × 70000 which equals 5637167690000
+ 80530967 × 900000 which equals 72477870300000
+ 80530967 × 7000000 what gives us 563716769000000
+ 80530967 × 90000000 yielding 7247787030000000

= 7890364312151519
