Alright, let's work through 67145760 times 64342607 step by step
67145760 × 64342607 = 64342607 × (67145760)
+ 64342607 × 0 that equals 0
+ 64342607 × 60 what gives us 3860556420
+ 64342607 × 700 which equals 45039824900
+ 64342607 × 5000 that is equal 321713035000
+ 64342607 × 40000 that results in 2573704280000
+ 64342607 × 100000 producing 6434260700000
+ 64342607 × 7000000 producing 450398249000000
+ 64342607 × 60000000 what gives us 3860556420000000

= 4320333247396320
