The small mud factory planned to produce a batch of cement. In the first month, 30% of this batch of cement was completed, and in the second month, 45 tons were produced. At this time, there were still 25 tons that had not been produced. How many tons is this batch of cement?
小泥厂计划生产一批水泥，第一月完成了这批水泥的30%，第二月生产了45吨，这时还剩下25吨没有生产．这批水泥有多少吨？
<gadget id="calculator">25 + 45</gadget>
<output>70</output>

<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">70 / (7/10)</gadget>
<output>100</output>

<result>100</result>