😐
in the binary system only 0 and 1 do exist. so the second decimal place must be a 2x1, instead a 10x1 like in decimal counting.
the next one is 2x2x1 instead 10x10x1
the 4th is 2x2x2x1 instead 10x10x10x1
for the decimal system (10) there are 10 digits, 0 - 9. for binary there are only 2, 0 - 1.
so we're at
111 0011 0101
now 😛