Sudoku #821

Complexity: Easy

 Fun Fact About Sudoku
A 40,000-piece jigsaw was completed by Dave Evans in April 2013, but it collapsed the next day.

Enter numbers into the empty cells so that each row, column and 3x3 box contains the numbers 1 to 9.

8 4 6 7 1
2 1 8 4
4 6 8 5 2
5 7 6 1 3
9 3 4 2 1 5 7 6 8
1 8 7 4 2
4 6 7 2 5
7 2 9 6
8 9 3 4 1