Convert 19 base 10 to base 8?

23 here is why base 8 means the first digits is 1s, we have 0,1,2,3,4,5,6,7 think of the 1s as 8^0s then the next digits is 8x, think of this as 8^1, So a 3 in the ones digits is still 3, but a 2 in the 8 digits, the second place, is 2 8x which is 16. So for example 10 in base 10 is 8+2 so it is 12 and 11 in base 10 is 8+3 so it is 13 19 is 23 because 19 is 16+3, that is to say, 2x8+2x1