Column equation: (4/5) of 38.5 is 4 less than 60% of a certain number. Find this number.
列方程：38.5的(4/5)，比某数的60%少4，求这个数．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">38.5 * (4/5)</gadget>
<output>30.8</output>

<gadget id="calculator">30.8 + 4</gadget>
<output>34.8</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">34.8 / (3/5)</gadget>
<output>58</output>

<result>58</result>