To find out what 3/8 x 15 is you would have to put 3/8 x 15/1 and multiply across and you would get 45/8 then since 8 doesn't go into 45 it would be a mixed fraction 5 5/8 hope this helped. Have a nice day!:)
Simply add the four extra b's to the already existing 4b, so it will be 8b + 12c.
33.57575757575757 etc. times