It costs 84 yuan more to buy basketballs than to buy volleyballs at the school. 5 basketballs are bought back at 56 yuan each, and volleyballs are bought back at 49 yuan each. How many volleyballs are bought back? (column equation solution)
学校买篮球比买排球多花84元，买回篮球5个，每个56元，买回的排球每个49元，买回多少个排球？(列方程解答)
<gadget id="calculator">56 * 5</gadget>
<output>280</output>

<gadget id="calculator">280 - 84</gadget>
<output>196</output>

<gadget id="calculator">196 / 49</gadget>
<output>4</output>

<result>4</result>