105*Y1=1(mod2) --> Y1=1(mod2)
70*Y2=1(mod3) --> Y2=1(mod3)
42*Y3=1(mod5) --> Y3=3(mod5)
30*Y4=1(mod7) --> Y4=4(mod7)
and corrections consequently follow..
... I tried it out, and this doesnt work. Is there another mistake? or am I doing this completely wrong?