Alright, let's work through 7941456 times 42900269 step by step
7941456 × 42900269 = 42900269 × (7941456)
+ 42900269 × 6 what gives us 257401614
+ 42900269 × 50 what gives us 2145013450
+ 42900269 × 400 producing 17160107600
+ 42900269 × 1000 producing 42900269000
+ 42900269 × 40000 that equals 1716010760000
+ 42900269 × 900000 what gives us 38610242100000
+ 42900269 × 7000000 that is equal 300301883000000

= 340690598651664
