Number A is 280, and (1/5) of Number B is equal to (1/4) of Number A. What is the number of B?
甲数是280，乙数的(1/5)等于甲数的(1/4)，乙数是多少？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/4) / (1/5)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">280 * (5/4)</gadget>
<output>350</output>

<result>350</result>