The ratio of number A to number B is 2:5. Multiply number A by 5 and divide number B by 5. What is their ratio now?
甲数与乙数的比是2：5，把甲数乘5，乙数除以5，现在它们的比值是多少．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) * 25</gadget>
<output>10</output>

<result>10</result>