The quotient of 5 divided by 8 plus 1.2 times of a number is 4. Find this number.
5除8的商加上一个数的1.2倍，和是4．求这个数．
<gadget id="calculator">8 / 5</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">4 - (8/5)</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">(12/5) / 1.2</gadget>
<output>2</output>

<result>2</result>