Convert the percent into a decimal by multiplying by 0.01: the percent in this problem is 6%, so when you multiply by 0.01, you get 0.06
Multiply the price by your new decimal: in this case, that would mean to multiply 62.8 by 0.06, which gives you 3.768. Keep in mind that this is just the tax, not your final answer.
Add the tax you just calculated to the original price: add 3.768 to 62.8 to get 66.568, which can be rounded to 66.57. That is your final answer.
