No problem, we've got 12977901 and 40070179 to multiply
12977901 × 40070179 = 40070179 × (12977901)
+ 40070179 × 1 what gives us 40070179
+ 40070179 × 00 what gives us 0
+ 40070179 × 900 yielding 36063161100
+ 40070179 × 7000 which equals 280491253000
+ 40070179 × 70000 producing 2804912530000
+ 40070179 × 900000 that is equal 36063161100000
+ 40070179 × 2000000 giving us 80140358000000
+ 40070179 × 10000000 that equals 400701790000000

= 520026816114279
