How many 19s can you find?
Let’s look at the first row. There’s one number 19. How many 19s are in this row? There’s one. Now let’s look in the third row. How many 19s can you find? There are two in this row. Can you see any 19s in this row? There aren’t any. Let’s look in the final row. There’s one.
Altogether, we found five numbered 19s in the grid.