What's the percentage of that? Please write it as clearly as possible, and the intermediate process is addition, subtraction, multiplication and division

What's the percentage of that? Please write it as clearly as possible, and the intermediate process is addition, subtraction, multiplication and division

In addition and subtraction of fractions, the denominator must be changed into the same number first. For example, 1 / 3 + 1 / 2 = 2 / 6 + 3 / 6 = 5 / 6, 1 / 2 + 1 / 4 = 1 / 4 + 2 / 4 = 3 / 4. If you multiply, you can directly multiply the numerator by the numerator and the denominator by the denominator. For example, if you divide by 1 / 2 * 1 / 6 = 1 / 12, 3 / 4 * 8 / 9 = 24 / 36 = 2 / 3, you can