In order to celebrate the successful return of the Shenzhou 7 spacecraft, red lanterns are hung on both sides of Jinjiang Avenue with a total length of 3 kilometers (both ends are also hung), one every 30 meters, how many red lanterns are needed in total.
为了庆祝神舟七号飞船胜利返回，在全长3千米的锦江大道两旁悬挂着红灯笼(两端也要挂)，每隔30米挂一个，一共需要多少个红灯笼．
<gadget id="calculator">1_000 / 30</gadget>
<output>100/3 = around 33.333333</output>

<gadget id="calculator">3 * (100/3)</gadget>
<output>100</output>

<gadget id="calculator">100 + 1</gadget>
<output>101</output>

<gadget id="calculator">101 * 2</gadget>
<output>202</output>

<result>202</result>