The Synthetic Soybean crush is based on CBOT Soybean, Soybean Oil, and Soybean Meal futures prices; in order to calculate the crush, prices of Soybean Oil and Soybean Meal need to be converted into dollars and cents per bushel. 

To convert prices:

Soybeans: No conversion required
Soybean Meal: 44 lbs (48% protein meal per bushel) / 2,000 lbs (per ton) = 0.022 x price of meal
Soybean Oil: 11 lbs (oil per bushel) x price of oil

To calculate the Crush:

[(Price of Soybean Meal ($/short ton) x .022) + Price of Soybean Oil (¢/lb) x 11] – Price of Soybeans ($/bu.)

For example, if August Soybean Meal, Soybean Oil and Soybean futures prices were at $297.20/ton, $.3340/pound and $9.565/bushel, respectively, the Board Crush would be calculated as (297.20 x .022) + (.3340 x 11) - 9.565 = $.6474/bushel.

The Synthetic Soybean crush values of CBOT.com are rounded to the nearest $0.0025/bu and displayed in eighths, the same way as soybean futures quotes.  Therefore, the sample crush value of $.6474 would be displayed as 64'6 (64 3/4).