The actual investment of a sewage burial project is 850,000 yuan, saving (1/18) compared with the original planned investment. How much is the original planned investment?
一项污水处埋工程实际投资85万元，比原计划投资节约(1/18)，原计划投资多少万元？
<gadget id="calculator">1 / 18</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">1 - (1/18)</gadget>
<output>17/18 = around 0.944444</output>

<gadget id="calculator">85 / (17/18)</gadget>
<output>90</output>

<result>90</result>