Hi lads

Can someone help me out here im trying to understand more about insulin and how it works on the body

If I consume a meal with 80g of carbs in the morning, then immediately take 5iu of short acting insulin.

Is there 30g of carbs in my bloodstream that my bodys own endogenous insulin can be used to shovel the carbs into cells? Or, is the bodys own insulin not able to work when exogenous insulin is in the body?

Thanks for the help