The sum of a number plus 8 times 2, the product is 287, what is this number? (solution by equation)
一个数加上8的和乘2，积是287，这个数是多少？(用方程解)
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">287 - 16</gadget>
<output>271</output>

<gadget id="calculator">271 / 2</gadget>
<output>271/2 = around 135.5</output>

<result>271/2 = around 135.5</result>