Alright, let's work through 78672477 times 26431757 step by step
78672477 × 26431757 = 26431757 × (78672477)
+ 26431757 × 7 that is equal 185022299
+ 26431757 × 70 yielding 1850222990
+ 26431757 × 400 what gives us 10572702800
+ 26431757 × 2000 yielding 52863514000
+ 26431757 × 70000 that equals 1850222990000
+ 26431757 × 600000 that equals 15859054200000
+ 26431757 × 8000000 resulting in 211454056000000
+ 26431757 × 70000000 giving us 1850222990000000

= 2079451794652089
