64 students line up in two teams to do cleaning in the community. The distance between the front and back is 1 meter. How long is each team?
64个同学排成两队去社区做清洁卫生，前后两人相距1米，每个队伍长多少米．
<gadget id="calculator">64 / 2</gadget>
<output>32</output>

<gadget id="calculator">32 - 1</gadget>
<output>31</output>

<gadget id="calculator">31 * 1</gadget>
<output>31</output>

<result>31</result>