How do you get 0111 to 7?

To convert the binary number 0111 to decimal, you can use the positional value of each digit. Starting from the right, the digits represent (2^0), (2^1), (2^2), and (2^3). Thus, (0 \times 2^3 + 1 \times 2^2 + 1 \times 2^1 + 1 \times 2^0) equals (0 + 4 + 2 + 1), which sums to 7. Therefore, the binary 0111 is equivalent to the decimal number 7.