# Maths for position safety

This section explains how the Fathom's FXD stablecoin position's safety is calculated.

For a position to be considered safe, below should hold true

In other words

And `debtAccumulatedRate`

is calculated as

since `debtAccumulatedRate`

is a `secondPounding`

interest rate.

#### Position safety calculation model

Please refer to below position safety calculation model.

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