Placing a question mark at the end of a phrase does not make it a sensible question. Try to use a whole sentence to describe what it is that you want answered.
You can calculate 13 + 56, and 13 - 56.
56 is the answer
56-gon
Moscow, the capital of Russia, is located at approximately 56 degrees N and 38 degrees E.
The name of a 56 sided polygon is Hexapentacontagon.
In the problem 56 + 28 = 84, 84 is the sum.
56 N 74 W is Baie-d'Hudson, Québec, Canada.
rokothana 56
Tau 56 III.
Moskow
Lyusakytaban, Egypt
The city located at 56 degrees north latitude and 12 degrees east longitude is Copenhagen, the capital of Denmark.