The actual greening area in Tong County last year increased by 1/5 compared to the original plan, and the actual greening area was 150 hectares more than the original plan. How many hectares were greened in the original plan?
桐县去年的实际绿化面积比原计划增加了(1/5)，实际比原计划多绿化150公顷，原计划绿化多少公顷？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">150 / (1/5)</gadget>
<output>750</output>

<result>750</result>