Alright, let's work through 6486 times 5708 step by step
6486 × 5708 = 5708 × (6486)
+ 5708 × 6 yielding 34248
+ 5708 × 80 what gives us 456640
+ 5708 × 400 that is equal 2283200
+ 5708 × 6000 producing 34248000

= 37022088
