#!/usr/bin/env python
# coding: utf-8

# # Rounding problem

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a=1E-11
b=11000
c=-a-b


# Right result

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1.0001*a+(b+c)


# ### Wrong result!

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1.0001*a+b+c


# #### Fix de problem:

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from decimal import Decimal
float(Decimal(1.0001*a)+Decimal(b)+Decimal(c))


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