The little ant was playing at a place 25 cm west of the entrance of the cave. My mother told it to go home and study. The naughty little ant first walked 5 cm to the east, then turned around and walked 3 cm to the west; Centimeters..., repeating this, the little ant walked to the entrance of the cave and the mother no longer allowed it to leave. Ask: How many centimeters did the little ant walk to the entrance of the cave?
小蚂蚁在洞口西边25厘米处玩耍，妈妈叫它回家学习，顽皮的小蚂蚁先向东走5厘米，接着调头向西走3厘米；然后再向东走5厘米，又调头向西走3厘米…，如此重复，小蚂蚁走到洞口妈妈便不再允许它离开．请问：小蚂蚁到洞口共走了多少厘米．
<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">25 - 20</gadget>
<output>5</output>

<gadget id="calculator">80 + 5</gadget>
<output>85</output>

<result>85</result>