Alright, let's work through 3200 times 6431 step by step
3200 × 6431 = 6431 × (3200)
+ 6431 × 0 which equals 0
+ 6431 × 00 that equals 0
+ 6431 × 200 that is equal 1286200
+ 6431 × 3000 what gives us 19293000

= 20579200
