The precipitation in a certain area last year was 459 millimeters, an increase (1/8) compared with the previous year. How many millimeters was the precipitation in this area in the previous year?
某地区去年降水量是459毫米，比前年增加(1/8)，这个地区前年降水量是多少毫米？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 + (1/8)</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">459 / (9/8)</gadget>
<output>408</output>

<result>408</result>