Alright, let's work through 6300 times 6730 step by step
6300 × 6730 = 6730 × (6300)
+ 6730 × 0 yielding 0
+ 6730 × 00 giving us 0
+ 6730 × 300 that is equal 2019000
+ 6730 × 6000 resulting in 40380000

= 42399000
