The Idiot Test

hey everyone, can you solve this equation?? pre-school children can solve it in 5-10 minutes, but can you solve it at all? 0123=1 1234=1 2345=1 3456=2 4567=2 5678=3 6789=4 1111=0 2222=0 3333=0 4444=4 5555=0 6666=4 7777=0 8888=8 9999=4 1010=2 0924=?