Four.
503 x 5993 = 3014479
4 significant figures.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
There are 3 significant figures in 94.2.
5 significant figures.
There are four significant figures in 0.1111.
4 significant figures.
3 significant figures.
3 significant figures.
4 significant figures.
There are two significant figures in 0.025.
5 significant figures.