There is a granary. Firstly, 25% of the total amount of stored grain and 30 tons of grain are transported away, and then 110 tons of grain are transported in. The grain stored in the granary has increased (3/20) compared to the original one. How many tons of grain was originally stored in the granary?
有一粮仓，先把存粮总数的25%多30吨的粮食运走，然后又运进110吨粮食，粮仓存粮比原来增加了(3/20)，粮仓原有存粮多少吨？
<gadget id="calculator">110 - 30</gadget>
<output>80</output>

<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

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

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(23/20) - (3/4)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">80 / (2/5)</gadget>
<output>200</output>

<result>200</result>