 
 <prompt> Phil ati Andre ti wa ni nkan ti o ni lati gba pizza. Won gba pizza kekere ti o ni ewa ati pizza nla ti o ni ewa. Pizza kekere naa ni o ni ewa 8, Ile naa ni o ni ewa 14. Won ni won gbe 9 ewa ni won gbogbo. Nigba ti won ti gbe 9 ewa, ni ewa wo ni won ni? <response>: There are 22 pieces of pizza because 14 plus 8 equals 22.
They have eaten 18 pieces of pizza because 9 plus 9 equals 18.
There are 4 pieces of pizza left because 22 minus 18 equals 4.
There are 2 pieces per person because 4 divided by 2 equals 2.

Answer is 2. 