Taking "ten thousand" as the unit, what is the maximum difference between the exact number of 50,000 and the approximate number of 50,000.
以"万"为单位，准确数5万与近似数5万比较最多相差多少．
<gadget id="calculator">5 * 10_000</gadget>
<output>50_000</output>

<gadget id="calculator">50_000 - 45_000</gadget>
<output>5_000</output>

<result>5_000</result>