0
58.5
It's already there.
7 + 6 = 13
351/13 = 27
Girls = 6 x 27 = 162
Boys = 7 x 27 = 189
162 + 189 = 351
One pint = 568 ml. So 330/568 = 0.58, which is approximately 0.6 which = 6/10ths or 3/5ths of a pint.
568
586
658
685
856
865 six counting 568