There are two chicken cages, big and small. The number of chickens in the small cage is 18 less than that in the big cage. If 6 chickens are taken out of the small cage and put into the big cage, the number of chickens in the small cage is less than that in the big cage (3/ 7), How many chickens are there in the big cage now?
有大小两只鸡笼，小笼里的鸡比大笼里的少18只，如果从小笼里拿出6只放进大笼，这样小笼里的鸡的只数比大笼少(3/7)，现在大笼有多少只鸡？
<gadget id="calculator">6 + 6 + 18</gadget>
<output>30</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 - (4/7)</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">30 / (3/7)</gadget>
<output>70</output>

<result>70</result>