A certain park plans to plant a ginkgo tree every 8 meters on one side of the road, and planted 29 trees. Do you know how many meters this road is?
某公园准备在路的一边每隔8米，栽一颗银杏树，栽了29棵，你知道这条路有多少米．
<gadget id="calculator">29 - 1</gadget>
<output>28</output>

<gadget id="calculator">28 * 8</gadget>
<output>224</output>

<result>224</result>