Alright, let's work through 78606440 times 77924090 step by step
78606440 × 77924090 = 77924090 × (78606440)
+ 77924090 × 0 that equals 0
+ 77924090 × 40 yielding 3116963600
+ 77924090 × 400 that results in 31169636000
+ 77924090 × 6000 what gives us 467544540000
+ 77924090 × 00000 that is equal 0
+ 77924090 × 600000 that equals 46754454000000
+ 77924090 × 8000000 that results in 623392720000000
+ 77924090 × 70000000 yielding 5454686300000000

= 6125335305139600
