Simple calculation: 1.69*(3/4)+3.31*(3/4)-3/4.
简便计算：1.69*(3/4)+3.31*(3/4)-3/4．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1.69 * (3/4)</gadget>
<output>1.2675</output>

<gadget id="calculator">3.31 * (3/4)</gadget>
<output>2.4825</output>

<gadget id="calculator">2.4825 - (3/4)</gadget>
<output>1.7325</output>

<gadget id="calculator">1.2675 + 1.7325</gadget>
<output>3</output>

<result>3</result>