There is a batch of chemical fertilizers in the warehouse. After the total amount (4/9) is shipped out, 35 tons are shipped in. At this time, the original amount of chemical fertilizers in the warehouse is (3/4). How many tons of chemical fertilizers are in the warehouse?
仓库里有一批化肥，运出总数的(4/9)后，又运进35吨，这时仓库里的化肥是原来的(3/4)，仓库里原有化肥多少吨？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 - (4/9)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(3/4) - (5/9)</gadget>
<output>7/36 = around 0.194444</output>

<gadget id="calculator">35 / (7/36)</gadget>
<output>180</output>

<result>180</result>