Mathematics

# 1 pound = 100 penny = 10 penny x 10 penny = 1/10 pound x 1/10 pound = 1/100 pound = 1 penny => 1 pound = 1 penny How is this possible if 1 pound = 100 pennies

$100penny\ isn't\ 10penny\ \times\ 10penny\\\\100penny=10\ \times\ 10penny\\-------------------\\\\10penny\ \times\ 10penny=100penny^2!!!!$