On one side of a road, 284 trees were planted every 8 meters. How long is this road?
在一条公路的一侧，每隔8米种一棵数，从头到尾一共种了284棵，这条公路有多长？
<gadget id="calculator">284 - 1</gadget>
<output>283</output>

<gadget id="calculator">8 * 283</gadget>
<output>2_264</output>

<result>2_264</result>