William's class set a goal each week of the number of cans of food that is to be collected. On the first day, 20 cans were collected. Then the number of cans increased by 5 each day. If they collected 5 days a week to reach their goal, how many cans of food was their goal per week?
On the second day, they collected 20 + 5 = 
<gadget id="calculator">20+5</gadget>
<output>25</output>
25 cans.
On the third day, they collected 25 + 5 = 
<gadget id="calculator">25+5</gadget>
<output>30</output>
30 cans.
On the fourth day, they collected 30 + 5 = 
<gadget id="calculator">30+5</gadget>
<output>35</output>
35 cans.
On the fifth day, they collected 35 + 5 = 
<gadget id="calculator">35+5</gadget>
<output>40</output>
40 cans.
Thus, the goal of William's class is to collect a total of 20 + 25 + 30 + 35 + 40 =
<gadget id="calculator">20+25+30+35+40</gadget>
<output>150</output>
150 cans of food per week.

<result>150</result>