The rice output of an experimental field this year is 300KG, which is 1/6 higher than that of ordinary fields. Find the yield of rice in an ordinary field. What is the correct column
一块实验田今年的水稻产量是300KG，比普通田地的产量高(1/6)．求普通田地水稻的产量．正确的列式是多少
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 + (1/6)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">300 / (7/6)</gadget>
<output>1_800/7 = around 257.142857</output>

<result>1_800/7 = around 257.142857</result>