Every two peach trees are 3 meters apart, and the little frog jumps from the first peach tree to the third peach tree. How many meters did you jump in total?
每两棵桃树之间都相隔3米，小青蛙从第一棵桃树跳到第三棵桃树．一共跳了多少米？
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>