Note over client,operation: Response is already sent, can't change it anymore
    opt Tasks
        operation -->> tasks: Send background tasks
    end
    opt Raise other exception
        tasks -->> dep: Raise other exception
    end
    Note over dep: After yield
    opt Handle other exception
        dep -->> dep: Handle exception, can't change response. E.g. close DB session.
    end
```

pkg math/big, func NewRat(int64, int64) *Rat
pkg math/big, method (*Int) Abs(*Int) *Int
pkg math/big, method (*Int) Add(*Int, *Int) *Int
pkg math/big, method (*Int) And(*Int, *Int) *Int
pkg math/big, method (*Int) AndNot(*Int, *Int) *Int
pkg math/big, method (*Int) Binomial(int64, int64) *Int
pkg math/big, method (*Int) Bit(int) uint
pkg math/big, method (*Int) BitLen() int
pkg math/big, method (*Int) Bits() []Word