No problem, we've got 47020875 and 84042872 to multiply
47020875 × 84042872 = 84042872 × (47020875)
+ 84042872 × 5 that equals 420214360
+ 84042872 × 70 that equals 5883001040
+ 84042872 × 800 what gives us 67234297600
+ 84042872 × 0000 that is equal 0
+ 84042872 × 20000 which equals 1680857440000
+ 84042872 × 000000 producing 0
+ 84042872 × 7000000 that is equal 588300104000000
+ 84042872 × 40000000 yielding 3361714880000000

= 3951769378953000
