Răspuns :
400:31 = 12,(903225806451612)9.....
31
---
90
62
---
280
279
-----
10
0
----
100
93
----
70
62
---
80
62
----
180
155
-----
250
248
-----
20
0
---
200
186
-----
140
124
-----
160
155
-----
50
31
----
190
186
-----
40
31
---
90
62
----
280
279
----
10......
31
---
90
62
---
280
279
-----
10
0
----
100
93
----
70
62
---
80
62
----
180
155
-----
250
248
-----
20
0
---
200
186
-----
140
124
-----
160
155
-----
50
31
----
190
186
-----
40
31
---
90
62
----
280
279
----
10......