九分之5减去九分之二，然后再除以2，结果是多少呢？这个问题看似简单，但实际上需要一些数学技巧来计算。本文将为您详细解答，并给出具体的计算步骤。

首先，我们需要将九分之5和九分之二转换为小数形式。九分之5等于5/9 ≈ 0.5556，九分之二等于2/9 ≈ 0.2222。现在，我们可以将两个小数相减，得到0.5556 - 0.2222 = 0.3334。

接下来，我们需要将结果除以2，即 0.3334 ÷ 2 = 0.1667。所以，九分之5减去九分之二再除以2的结果为0.1667。

英文翻译对照：

What is the result of subtracting nine-fifths from nine halves and then dividing by two? This question may seem simple, but it actually requires some mathematical techniques to calculate. This article will provide you with a detailed explanation and the specific steps to compute the answer.

Firstly, we need to convert nine-fifths and nine halves into decimal form. Nine-fifths is equal to 5/9 ≈ 0.5556, and nine halves is equal to 2/9 ≈ 0.2222. Now, we can subtract the two decimals: 0.5556 - 0.2222 = 0.3334.

Next, we need to divide the result by two, which is 0.3334 ÷ 2 = 0.1667. Therefore, the result of subtracting nine-fifths from nine halves and dividing by two is 0.1667.