The chances of an explosion causing the formation of one protein out of hundreds it takes to make a cell is 1x10 to the 27th power.
IOW, put all the components in a pile and explode it enough times to end up with an airliner and that's the chances of creating one cell protein.
The Lord has set a great dilusion on you.
The mathematical odds you give being meaningless because there are more than a few models on the table. The fact is, it is not known whether time and the universe began with the BB or its cyclic or a part of an infinite multiverse, etc, etc.
It is the theist who claims knowledge where none exists. It is the theist who claims the existence of a God or gods that created the universe.