Alright, let's work through 6380 times 5840 step by step
6380 × 5840 = 5840 × (6380)
+ 5840 × 0 producing 0
+ 5840 × 80 giving us 467200
+ 5840 × 300 that equals 1752000
+ 5840 × 6000 that is equal 35040000

= 37259200
