No problem, we've got 6860609 and 7647238 to multiply
6860609 × 7647238 = 7647238 × (6860609)
+ 7647238 × 9 what gives us 68825142
+ 7647238 × 00 producing 0
+ 7647238 × 600 resulting in 4588342800
+ 7647238 × 0000 what gives us 0
+ 7647238 × 60000 which equals 458834280000
+ 7647238 × 800000 yielding 6117790400000
+ 7647238 × 6000000 that results in 45883428000000

= 52464709847942
