Alright, let's work through 6430 times 1831 step by step
6430 × 1831 = 1831 × (6430)
+ 1831 × 0 that is equal 0
+ 1831 × 30 what gives us 54930
+ 1831 × 400 that results in 732400
+ 1831 × 6000 that results in 10986000

= 11773330
