On one side of a road, 28 red flags were planted from beginning to end, one every 6 meters. How many meters is the distance from the first to the last red flag?
在一条大路的一边从头至尾插了28面红旗，每隔6米插一面．第一面至最后一面红旗之间的距离是多少米？
<gadget id="calculator">28 - 1</gadget>
<output>27</output>

<gadget id="calculator">27 * 6</gadget>
<output>162</output>

<result>162</result>