The number of A is 8, and the number of B is 5. What is expressed by the formula (8-5)/5=60%.
甲数是8，乙数是5，算式(8-5)/5=60%表示多少．
<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>