There are 160 poplar trees in the forest, which are less than pine trees (1/9). How many pine trees are there? What is the correct column
树林里有杨树160棵，比松树少(1/9)，松树有多少棵？正确列式是多少
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 - (1/9)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">160 / (8/9)</gadget>
<output>180</output>

<result>180</result>