Let's count to 28.
1,2,3,4,5,6,7,8,9,10,11,12,13,15,15,16,17,18,19,20,21,22,23,24,25,26,27,28.
What is this?
It's tape cutter.
What is this?
It's a marker.
Let's count to ten.
1,2,3,4,5,6,7,8,9,10.
What number is it ?
28
Let's count to 27.
1,2,3,4,5,6,7,8,9,10,11,12,13,15,15,16,17,18,19,20,21,22,23,24,25,26,27.
What number is it ?
It's 27.