How do you work out 6.34 x 5.2 without calc pls show all working out

The answer is 32.96800, you can do the equation by: stacking the numbers on top so 6.34 will be on top then put 5.2 on bottom but 5 needs to be directly under the 6 and add a 0 to the end of 5.2 so it will look like 5.20 then multiply like you would with regular multiplication and you get the answer 32.96800.

What am i doing here. add?

20000 as first it increases by 2500 then by 5000 so next it will increase by 10000