A rice wholesaler has a batch of rice. On the first day, half of it is sold in the morning, 8 tons in the afternoon, and the remaining half is sold in the morning on the second day, and 10 tons in the afternoon. At this time, there are still 25 tons of rice left. Ask the original number of tons of this batch of rice.
某大米批发商有一批大米，第一天上午卖出一半，下午卖出8吨，第二天上午又卖出剩下的一半，下午又卖出10吨，这时还剩下大米25吨，问这批大米原有多少吨．
<gadget id="calculator">25 + 10</gadget>
<output>35</output>

<gadget id="calculator">35 * 2</gadget>
<output>70</output>

<gadget id="calculator">70 + 8</gadget>
<output>78</output>

<gadget id="calculator">78 * 2</gadget>
<output>156</output>

<result>156</result>