hellloo woorrlld .

Pick any number. 

Add 3. 

Multiply your result by 10. 

Multiply your result by your original number.

Subtract 10.

Divide by 10. 

Add 1.

Divide by your original number.

Subtract 3 from that number 

Subtract your original number . 

What do you get ? 

Same result no matter what number you use .