multi tool has to be my less-used tool ever, I got a nice Multitool with a nice blades, But I have use for it really only once in a blue moon..
However when there is a task and the only way you can do it is by multitool I'm thankful for it.
I have a Mafell track saw and it will do this on its side 10mm up from the floor. Expensive solution for one job though. I also have a Fein multi tool and with a circular blade it would do this easily and neatly. I find the multi tool very useful. I just wish it would go a bit deeper.