No problem, we've got 70812717 and 64118107 to multiply
70812717 × 64118107 = 64118107 × (70812717)
+ 64118107 × 7 giving us 448826749
+ 64118107 × 10 that equals 641181070
+ 64118107 × 700 giving us 44882674900
+ 64118107 × 2000 which equals 128236214000
+ 64118107 × 10000 what gives us 641181070000
+ 64118107 × 800000 producing 51294485600000
+ 64118107 × 0000000 producing 0
+ 64118107 × 70000000 which equals 4488267490000000

= 4540377365566719
