Solve the equation: 18x/6-3x/6=5.
解方程：18x/6-3x/6=5．
<gadget id="calculator">18 / 6</gadget>
<output>3</output>

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

<gadget id="calculator">3 - (1/2)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 / (5/2)</gadget>
<output>2</output>

<result>2</result>