Pls help ASAP I don’t really know hot to multiply that

Answer:
1 ft=12 inches
So mulitply 57 1/2 by 12
690
Step-by-step explanation:
Answer:
690 inches
Step-by-step explanation:
12 inch = 1 foot
1/2 ft * 12in = 6in
57 * 12 = 684
690 inches
Hope I helped :]