A hope elementary school built a plastic track, the actual cost was 160,000 yuan, 20,000 yuan less than the original planned cost (9/10). How much was the original plan?
一所希望小学修建一条塑胶跑道，实际造价16万元，比原计划造价的(9/10)少2万元．原计划造价多少万元？
<gadget id="calculator">16 + 2</gadget>
<output>18</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">18 / (1/10)</gadget>
<output>180</output>

<result>180</result>