3.6*(2/7)+(18/19)*(4/7)+(4/19)*(1/7)=how much.
3.6*(2/7)+(18/19)*(4/7)+(4/19)*(1/7)=多少．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">3.6 * (2/7)</gadget>
<output>1.028571</output>

<gadget id="calculator">18 / 19</gadget>
<output>18/19 = around 0.947368</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(18/19) * (4/7)</gadget>
<output>72/133 = around 0.541353</output>

<gadget id="calculator">4 / 19</gadget>
<output>4/19 = around 0.210526</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(4/19) * (1/7)</gadget>
<output>4/133 = around 0.030075</output>

<gadget id="calculator">1.028571 + (72/133) + (4/133)</gadget>
<output>1.6</output>

<result>1.6</result>