Find/replace using wild cards to insert space between given characters

[rcpandey.vs]

I want to insert a space between two patterns. For example, in a strech of the text "23445asde" I want to insert a space between number and text which should appear like "234445 asde".
I can find the junction of number and text by using wildcards find "[0-9][a-z]" but replacing with ""\1, \2" doesnt work.
Where am I doing wrong? or what is the alternate way?

 

[Lisa Wilke-Thissen]

Hi,

[Word version?)

I want to insert a space between two patterns.
For example, in a strech of the text "23445asde"
I want to insert a space between number and
text which should appear like "234445 asde".
I can find the junction of number and text by
using wildcards find "[0-9][a-z]" but replacing
with ""\1, \2" doesnt work.
Where am I doing wrong?

missing the brackets ().

Find: ([0-9])([a-z])
Replace with: \2<space>\1