It is known that 4x+0.5=9.5, what is the result of 3x+7.
已知4x+0.5=9.5，3x+7的结果是多少．
<gadget id="calculator">9.5 - 0.5</gadget>
<output>9</output>

<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">(9/4) * 3</gadget>
<output>27/4 = around 6.75</output>

<gadget id="calculator">(27/4) + 7</gadget>
<output>55/4 = around 13.75</output>

<result>55/4 = around 13.75</result>