1
99:59:59,999 --> 99:59:59,999
100/25恰好是4

2
99:59:59,999 --> 99:59:59,999
4×25=100 现在相减 110-100=10

3
99:59:59,999 --> 99:59:59,999
4×25=100 相减后得0

4
99:59:59,999 --> 99:59:59,999
再落一个0

5
99:59:59,999 --> 99:59:59,999
小数点在这儿 写上0.4

6
99:59:59,999 --> 99:59:59,999
所以商是4

7
99:59:59,999 --> 99:59:59,999
这个分数=0.44

8
99:59:59,999 --> 99:59:59,999
那么不必再算下一位了

9
00:00:00,588 --> 00:00:08,091
将分数11/25

10
00:00:08,091 --> 00:00:11,237
也可以说成是25分之11

11
00:00:11,237 --> 00:00:14,294
将它写成小数

12
00:00:14,294 --> 00:00:17,329
并保留到千分位

13
00:00:17,329 --> 00:00:22,680
11/25 也可以看成-

14
00:00:22,680 --> 00:00:26,503
它等价于11÷25

15
00:00:26,503 --> 00:00:32,223
所以这里

16
00:00:32,223 --> 00:00:35,222
可以用11÷25算

17
00:00:35,222 --> 00:00:39,913
得到的就是11/25的

18
00:00:39,913 --> 00:00:41,529
小数形式

19
00:00:41,529 --> 00:00:44,044
因为要保留到的位数在个位之后

20
00:00:44,044 --> 00:00:45,788
要算十分位

21
00:00:45,788 --> 00:00:49,309
百分位 千分位

22
00:00:49,309 --> 00:00:56,506
那么在11后面的小数点后加几个0

23
00:00:56,506 --> 00:01:00,079
开始算除法

24
00:01:00,079 --> 00:01:08,473
1/25除不到

25
00:01:08,473 --> 00:01:11,689
11/25也除不到

26
00:01:11,689 --> 00:01:23,025
110/25可以相除

27
00:01:23,025 --> 00:01:27,025
110/25 4倍 4×25=100