The following is the time for a group to cook with a stove: 5 minutes for lighting a fire, 2 minutes for washing rice, 30 minutes for cooking rice, 5 minutes for washing vegetables, 8 minutes for chopping vegetables, 15 minutes for cooking, and 2 minutes for serving rice. How long will it take.
下面是一个小组用火炉做饭的时间：生火5分，淘米2分，做米饭30分，洗菜5分，切菜8分，炒菜15分，盛饭2分，他们做这次饭至少要花多少时间．
<gadget id="calculator">5 + 2 + 30 + 2</gadget>
<output>39</output>

<result>39</result>