Răspuns :
69 :7=9,(857142)
63
---
=60
56
-----
=40
35
------
=50
49
-----
=10
7
-----
=30
28
----
=20
14
-----
=60
56
------
=4
63
---
=60
56
-----
=40
35
------
=50
49
-----
=10
7
-----
=30
28
----
=20
14
-----
=60
56
------
=4