A company is lining a 900-foot path with a fence. Every 6 feet, a fence pole is placed. The entire path is lined with a fence except for a 42-foot bridge. How many fence poles will be placed along the whole path on both sides?
There are 900 - 42 = 
<gadget id="calculator">900-42</gadget>
<output>858</output>
858 feet of path to line.
There are poles every 6 feet, so the company needs 858 / 6 = 
<gadget id="calculator">858/6</gadget>
<output>143</output>
143 poles.
The poles have to go on both sides of the path, so there will be 143 * 2 = 
<gadget id="calculator">143*2</gadget>
<output>286</output>
286 fence poles along the whole path.

<result>286</result>