In that the toes of the feet were partly of iron and partly of clay, the latter stages of this kingdom will be partly strong and partly fragile.

In that you were seeing feet and toes ¹  partly of wet clay ²  and partly of iron, so this will be a divided kingdom. Some of the strength of iron will be in it, for you saw iron mixed with wet clay. ³ 

At that very moment the fingers of a human hand appeared ¹  and wrote on the plaster of the royal palace wall, opposite the lampstand. ²  The king was watching the back ³  of the hand that was writing.