The wall with a total length of 910 cm consists of 10 evenly spaced square columns (there are columns at both ends of the wall). The side length of the pillar is 10 cm. So, what is the distance in centimeters between two adjacent columns?
总长度为910厘米的墙体包括10个均匀隔开的正方形柱子(墙体两端均有柱子)．柱子边长为10厘米．那么，两相邻柱子间的距离是多少厘米．
<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<gadget id="calculator">910 - 100</gadget>
<output>810</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">810 / 9</gadget>
<output>90</output>

<result>90</result>