The school built a plastic runway, which cost a total of 160,000 yuan in material costs and 20,000 yuan in wages for workers. It is higher than the planned cost (1/9), how much is the planned cost?
学校修建一条塑胶跑道，花费材料费合计16万元，工人工资2万元．比计划造价高(1/9)，计划造价多少万元？
<gadget id="calculator">16 + 2</gadget>
<output>18</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 + (1/9)</gadget>
<output>10/9 = around 1.111111</output>

<gadget id="calculator">18 / (10/9)</gadget>
<output>81/5 = around 16.2</output>

<result>81/5 = around 16.2</result>