9, 19, 40, 83, 170, 340

21, 28, 33, 35, 37, 36

5, 13. 29, 61, 120, 253

0, 7, 28, 63, 124, 215

In a retail shop, there were 54 cupboards. In each cupboard. 28 racks were made. In each rack 10 boxes were kept. In each box 4 shirts were packed. One day 500 boxes were sold and 250 boxes were purchased. How many shirts were there on that day ?