There are multiple currencies called peso. For example, Chilean peso, Colombia peso, and Mexican peso, among others.
So, you have to choose the correct one. In this case, we are working with Mexican peso.
You need the exchange rate. This exchange rate is varialbe. Today's exchange rate is USD 1,00 = pesos 17,71.
So, you just have to divide the amount of pesos by the number of pesos per dollar to learn how many dollars you wolud have:
1000 pesos / 17.71 pesos / dollar = 56.47 dollars
Answer: 56.47 dollars