For example, all my number which I used with 3 decimals as below:
62.500
62.500
26.738
26.350
62.500
62.500
Total is: 303.088

I used this function in seperate cell: =INT(SUM(A1:A6)) it gives me 303 (It's correct)
Now for the function of decimals I used these functions which you gave it to me:
=TEXT(MOD(SUM(A1:A6),1)*1000,"000")
or
=REPLACE(TEXT(MOD(SUM(A1:A6),1),".000"),1,1,"")
but it gives me this result: 087 (not correct) the right result is: 088

Please for quick help.

Thank.

Best Regards,

Mostafa Saqallah