Calculate business days in a month then return a devision of said number

I'm using the following formula: =SUM(1250/(NETWORKDAYS(V1,EOMONTH(V1,0))))
The reference: V1 = 01/07/2014

I want this formula to divide 1250 by the number of business days in July 2014. The result is showing "23/02/1900" instead of "54.34782609" (1250/23). What am I doing wrong?

I could do it in two cells, i.e. one cell with the formula "=NETWORKDAYS(V1,EOMONTH(V1,0))", which would return 23, then have another cell with the formula "=SUM(1250/the cell showing 23)" but I want it to be as minimal as possible and would like it all in one cell.

It's automatically formatting the cell as Date. Change it back to General

....also you don't need SUM function, this formula is sufficient

=1250/NETWORKDAYS(V1,EOMONTH(V1,0))