It is known that (2/5) of the number A is equal to (8/25) of the number B, and the number A is 80, so what is the number B?
已知甲数的(2/5)等于乙数的(8/25)，甲数是80，则乙数是多少？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">8 / 25</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">(2/5) / (8/25)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">80 * (5/4)</gadget>
<output>100</output>

<result>100</result>