Alright, let's work through 77560640 times 61373350 step by step
77560640 × 61373350 = 61373350 × (77560640)
+ 61373350 × 0 producing 0
+ 61373350 × 40 yielding 2454934000
+ 61373350 × 600 giving us 36824010000
+ 61373350 × 0000 giving us 0
+ 61373350 × 60000 that results in 3682401000000
+ 61373350 × 500000 resulting in 30686675000000
+ 61373350 × 7000000 that equals 429613450000000
+ 61373350 × 70000000 what gives us 4296134500000000

= 4760156304944000
