(1/3) of a number is 2.48 less than (3/5) of 20.8. What is this number?
一个数的(1/3)比20.8的(3/5)少2.48，这个数是多少？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">20.8 * (3/5)</gadget>
<output>12.48</output>

<gadget id="calculator">12.48 - 2.48</gadget>
<output>10</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">10 / (1/3)</gadget>
<output>30</output>

<result>30</result>