The greatest common factor of two natural numbers is 125, and the least common multiple is 125125. So, what is the smallest difference between these two natural numbers?
两个自然数的最大公因数是125，最小公倍数是125125．那么，这两个自然数的差最小是多少．
<gadget id="calculator">7 * 11</gadget>
<output>77</output>

<gadget id="calculator">77 - 13</gadget>
<output>64</output>

<gadget id="calculator">125 * 64</gadget>
<output>8_000</output>

<result>8_000</result>