On the side of the road, plant a tree every 4 meters. When Duoduo ran from the first tree to the 250th tree, how many meters did he run in total?
公路一旁，每隔4米栽一棵树．多多从第1棵跑到第250棵时，总共跑了多少米．
<gadget id="calculator">250 - 1</gadget>
<output>249</output>

<gadget id="calculator">4 * 249</gadget>
<output>996</output>

<result>996</result>