There is a batch of cement on the construction site, 12 tons are used in the first week, and 26 tons are used in the second week, and the cement used at this time accounts for 25% of this batch of cement. How many tons is this batch of cement?
工地有一批水泥，第一周用去12吨，第二周用去26吨，此时用去的水泥占这批水泥的25%．这批水泥共有多少吨？
<gadget id="calculator">26 + 12</gadget>
<output>38</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">38 / (1/4)</gadget>
<output>152</output>

<result>152</result>