4358 +2723 -----
1
4358
+2623
------
1
1
4358
+2623
------
81
1
4358
+2623
------
981
1
4358
+2623
------
6981
Here's another example:
1905 +2817 -----
1
1905
+2817
-----
2
1
1905
+2817
-----
22
1 1
1905
+2817
-----
722
1 1 1905 +2817 ----- 4722