How many rundlets are there in 218 in3?
Some conversion factors that may be useful are given below:
1.00 barrel = 42.0 gal
1.00 gal = 231 in3
1.00 gal = 3.78 L
1.00 rundlet = 6.81 × 104 mL
1.00 L = 1000.0 mL
1.00 barrel = 4.00 firkins