number plus the quotient of 4.2 divided by 30 is equal to 9.74. Find this number. (column equation)
一个数加上4.2除以30的商，等于9.74，求这个数．(列方程)
<gadget id="calculator">4.2 / 30</gadget>
<output>0.14</output>

<gadget id="calculator">9.74 - 0.14</gadget>
<output>9.6</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">9.6 / (1/30)</gadget>
<output>288</output>

<result>288</result>