The sum of 8 times a number plus 30 (2/3) is 52. What is this number?
一个数的8倍加上30的(2/3)的和是52，这个数是多少？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 * (2/5)</gadget>
<output>12</output>

<gadget id="calculator">52 - 12</gadget>
<output>40</output>

<gadget id="calculator">40 / 8</gadget>
<output>5</output>

<result>5</result>