Three times the sum of a number plus 9.5 is 46.5, find this number.
一个数加上9.5的和的3倍是46.5，求这个数．
<gadget id="calculator">46.5 / 3</gadget>
<output>15.5</output>

<gadget id="calculator">15.5 - 9.5</gadget>
<output>6</output>

<result>6</result>