A kid bought stuff worth Rs 45 from Santa's shop and gave him a 5 rupee note and put '0' (zero) behind 5 and gave it to Santa

A kid bought stuff worth rs 45 from santa's shop and gave him a 5 rupee note and put '0' (zero) behind 5 and gave it to santa.

On top of it, he asked for the balance rs 5.

Having been outsmarted, santa took out a 50 rupee note and crossed '0' (zero) with a pen and gave it to the kid and said, "now we are even"!