Here's a key map that will allow you to reach numbers 1-9 on the index, middle and ring fingers of your right hand. All of the movements require a Num-shift press.
0 is Right thumb one, south.
Enter is Right ring east.
Period is Right middle east.
The rest of the numbers are as follows:
1-3 are south.
4-6 are west.
7-9 are north.
This map doesn't include any of the simple mathematical symbols or other keys not already mentioned.