In the division formula 630/9, the dividend is reduced by 9, the divisor remains the same, and the quotient is reduced by how much.
在除法算式630/9中，被除数减少了9，除数不变，商减少多少．
<gadget id="calculator">630 / 9</gadget>
<output>70</output>

<gadget id="calculator">70 - 69</gadget>
<output>1</output>

<result>1</result>