The area of a trapezoid is 5.78 square meters and the height is 1.7 meters. What is the sum of the upper and lower bases of the trapezoid?
一个梯形面积是5.78平方米，高是1.7米，则梯形上、下底之和是多少米．
<gadget id="calculator">2 / 1.7</gadget>
<output>1.176471</output>

<gadget id="calculator">5.78 * 1.176471</gadget>
<output>6.800002</output>

<result>6.800002</result>