Răspuns :

2003¹=(.......3)
2003²=(.......9)
2003³=(.......7)
2003⁴=(.......1)
2003⁵=(.......3)

se repeta din 4 in 4

2004:4=501

2003²⁰⁰⁴=(......3)

2004¹=(.......4)
2004²=(.......6)
2004³=(.......4)

se repeta din 2 in 2

2003:2=1001 rest 1

2004²⁰⁰³=(......4)

M=(......3)+(......4)=(......7)