Write down the value of the underlined digit

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

7  4
    --
Value of the underlined digit ___________

9  3
--
Value of the underlined digit ___________

2  4
--

Value of the underlined digit ___________

6  5
    --
Value of the underlined digit ___________

5  3
--

Value of the underlined digit ___________

9  9
--

Value of the underlined digit ___________