Little sloppy writes a seven-digit number, and writes the highest digit 5 as 8. How much is the resulting seven-digit number larger than the original number?
小马虎写一个七位数，将最高位上的5写成了8，所得的七位数比原数大多少．
<gadget id="calculator">8_000_000 - 5_000_000</gadget>
<output>3_000_000</output>

<result>3_000_000</result>