Calculation: 5*0.7+40%+x=9.1.
计算：5*0.7+40%+x=9.1．
<gadget id="calculator">5 * 0.7</gadget>
<output>3.5</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">9.1 - 3.5 - (2/5)</gadget>
<output>5.2</output>

<result>5.2</result>