Write down the value of the underlined digit

9  4  3
-
Value of the underlined digit ___________
5  8  4
    -
Value of the underlined digit ___________

4  9  2
        -
Value of the underlined digit ___________

7  3  8
    -
Value of the underlined digit ___________

8  7  3
-
Value of the underlined digit ___________
4  7  4
        -
Value of the underlined digit ___________

9  8  2
    -
Value of the underlined digit ___________

2  2  8
        -
Value of the underlined digit ___________