Solve the equation: 6x+0.5*7=6.5.
解方程：6x+0.5*7=6.5．
<gadget id="calculator">0.5 * 7</gadget>
<output>3.5</output>

<gadget id="calculator">6.5 - 3.5</gadget>
<output>3</output>

<gadget id="calculator">3 / 6</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>