Solve the equation: 2x-0.36*5=0.4.
解方程：2x-0.36*5=0.4．
<gadget id="calculator">0.36 * 5</gadget>
<output>1.8</output>

<gadget id="calculator">0.4 + 1.8</gadget>
<output>2.2</output>

<gadget id="calculator">2.2 / 2</gadget>
<output>1.1</output>

<result>1.1</result>