They collected the leftovers (Mk 6:43-6:44)

“They took up

Twelve baskets

Full of broken pieces

Of bread

And of the fish.

Those who had eaten

The loaves

Numbered five thousand men.”

 

καὶ ἦραν κλάσματα δώδεκα κοφίνων πληρώματα καὶ ἀπὸ τῶν ἰχθύων.

καὶ ἦσαν οἱ φαγόντες τοὺς ἄρτους πεντακισχίλιοι ἄνδρες.

 

This is the only miracle that is recorded in all four gospels, Matthew, chapter 14:20-21, Luke, chapter 9:17, and John, chapter 6:13, plus here, but there are slight differences.  All agree that there were 12 baskets of food left over, symbolic of the 12 tribes of Israel and the 12 apostles.  They also agree that it was about 5,000 men.  Obviously, there was no exact count taken.  Only Matthew added the remark about women and the children.  Mark said that they took up 12 full hand baskets of the broken pieces of bread (καὶ ἦραν κλάσματα δώδεκα κοφίνων πληρώματα), and the pieces of fish (καὶ ἀπὸ τῶν ἰχθύων).  Those who ate the loaves (καὶ ἦσαν οἱ φαγόντες τοὺς ἄρτους) were about 5,000 men (πεντακισχίλιοι ἄνδρες).  Without a doubt, this was a very large crowd to feed.