Calculation: (1/4)*39+(3/4)*27.
计算：(1/4)*39+(3/4)*27．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * 39</gadget>
<output>39/4 = around 9.75</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) * 27</gadget>
<output>81/4 = around 20.25</output>

<gadget id="calculator">(39/4) + (81/4)</gadget>
<output>30</output>

<result>30</result>