refrigerator has two parts, a freezer and a freezer. The total capacity is about 180 liters. It is known that the capacity of the freezer is 2/7 of that of the freezer. How many liters is there in the freezer?
一个冰箱有冷冻室和冷藏室两部分，总容量约是180升，已知冷冻室的容量是冷藏室的(2/7)，冷冻室约有多少了升？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 + (2/7)</gadget>
<output>9/7 = around 1.285714</output>

<gadget id="calculator">180 / (9/7)</gadget>
<output>140</output>

<gadget id="calculator">140 * (2/7)</gadget>
<output>40</output>

<result>40</result>