Let's calculate 67694346 x 58428621
67694346 × 58428621 = 58428621 × (67694346)
+ 58428621 × 6 which equals 350571726
+ 58428621 × 40 producing 2337144840
+ 58428621 × 300 that equals 17528586300
+ 58428621 × 4000 resulting in 233714484000
+ 58428621 × 90000 which equals 5258575890000
+ 58428621 × 600000 what gives us 35057172600000
+ 58428621 × 7000000 yielding 409000347000000
+ 58428621 × 60000000 producing 3505717260000000

= 3955287286276866
