Hope Primary School expanded the teaching building. The original plan was to invest 560,000 yuan, but the actual investment was 1/7 less than the original plan. How much was the actual investment?
希望小学扩建教学楼，原计划投资56万元，实际投资比原计划节约了(1/7)，实际投资了多少万元？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">56 * (6/7)</gadget>
<output>48</output>

<result>48</result>