The sum of 3.5 times x and 17 is 27.5.
x的3.5倍与17的和是27.5．
<gadget id="calculator">27.5 - 17</gadget>
<output>10.5</output>

<gadget id="calculator">10.5 / 3.5</gadget>
<output>3</output>

<result>3</result>