Sum every nth Column . Help needed

Greetings everyone and thank you in advance :-)

I need a formula .
Range D10 to XC10

In XD10 I need a formula to sum values every 6 columns
( D10+J10+P10 and so on)

I tried "=SUM(IF(MOD(COLUMN(D$10:XC$10),6 = 1,D10:XC10,0)))" (CTRL_SHIFT_ENTER)

Excel gives me error and the error highlited is ",6"

In XE10 I will need the same but starting from E10