On the expressway, there will be a mileage plate every 1 kilometer. Xiao Ming took the car and counted 5 mileage plates from the mileage plate with "30 kilometers". What is written on the mileage plate? rice?
在高速公路上，每隔1千米的路程会有一个里程牌，小明乘车从写有"30千米"的里程牌开始数了5个里程牌，这时里程牌上面写的是多少千米？
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">1 * 4</gadget>
<output>4</output>

<gadget id="calculator">30 + 4</gadget>
<output>34</output>

<result>34</result>