Find the missing digit:

0-?0735-00458-1

0x3+N+0x3+7+3x3+5+0x3+0+4x3+5+8x3+1=0

N+7+9+5+12+5+24+1=0

63+N=0

3+N=0

N=0-3=7

The missing digit is 7