When you multiply a decimal by 10, you move the decimal two places to the right.( this is so you can divide properly). for ex. 0.07 is going to be 7 when you multiply by 10. you do the same for 1.68, and get 168. now you can divide!:) 7<span>÷168</span>
You actually need to multiply both numbers by 100 to make them whole numbers. When you multiply by 10 the decimal moves 1 place to the right. When you multiply by 100 you move the decimal on both numbers 2 places to the right so the problem becomes