Write down the value of the underlined digit

5  2
--
Value of the underlined digit ___________
4  3
    --
Value of the underlined digit ___________

7  4
    --
Value of the underlined digit ___________

9  4
--
Value of the underlined digit ___________

2  3
--

Value of the underlined digit ___________

5  5
    --
Value of the underlined digit ___________

6  4
--

Value of the underlined digit ___________

9  6
--

Value of the underlined digit ___________