I confused how to caculate the overflow and the leftmost carry-out bit and carry out bits. Please help me list them, thanks

Question 3 8 12 pts Please calculate the following subtractions of 8-bit unsigned binary numbers. You must write exactly 8 bits in the "result" box, and write exactly 1 bit in the "leftmost carry-out bit" box, and write yes or no (lowercase) in the "overflow" box. 1) 01010101- 00111011 8-bit result = 00011010 leftmost carry-out bit- overflow (yeso)- 2) 00010110 10100101 8-bit result01110001 leftmost carry-out bit = 1 overflow (yeso- yes