It is simply: M that equals 1000
You would write that 0.0001.
You would write it as 10,010
610
0.0035
6425
1000 (which is a thousand).
4,000.
mx
1000
2010 = two thousand ten.
You would write that 0.0001.
8900 + 14 = 8914
You would write it as 10,010
xc or m
610
0.0035
4.015