What is the result of subtracting the difference between the largest two-digit number and the smallest two-digit number and dividing by 178?
最大的两位数减去最小的两位数的差去除178，结果为多少．
<gadget id="calculator">99 - 10</gadget>
<output>89</output>

<gadget id="calculator">178 / 89</gadget>
<output>2</output>

<result>2</result>