The school held a "June 1st" celebration and planned to buy 70 gifts at an original price of 4.0 yuan each. Because of the wholesale price, Mr. Wang actually bought 80 gifts. How much is the wholesale price per gift? (column equation solution)
学校举行"六一"庆祝活动，计划买70个礼物，原价每个4.0元．由于买到批发价，实际王老师买到了80个礼物．批发价每个礼物多少钱？(列方程解答)
<gadget id="calculator">70 * 4</gadget>
<output>280</output>

<gadget id="calculator">280 / 80</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>