Dr. Long rewarded Ouou with some bamboo shoots. Ou Ou has already eaten 36 bags. If he eats 1 bag more than before, he can eat the remaining bamboo shoots for 20 days, but he has to eat 2 bags less on the last day. If he still eats at the original speed, he can eat 3 more bags. sky. So, how many bags of bamboo shoots did Dr. Long reward Oou?
龙博士奖励了欧欧一些竹笋．欧欧已经吃了36袋，若以后每天比原来多吃1袋，剩下的竹笋还能吃20天，但最后一天要少吃2袋，若还是按原来的速度吃，就能多吃3天．那么，龙博士奖励了欧欧多少袋竹笋？
<gadget id="calculator">20 * 1</gadget>
<output>20</output>

<gadget id="calculator">20 - 2</gadget>
<output>18</output>

<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<gadget id="calculator">20 + 3</gadget>
<output>23</output>

<gadget id="calculator">6 * 23</gadget>
<output>138</output>

<gadget id="calculator">138 + 36</gadget>
<output>174</output>

<result>174</result>