Can Use A Find Expression To Parse Data In A Table

I've got a Table with a string of data delimited by an "*". The first part of the string before the "*" can be variable in length, so if I use a LEFT expression to break apart the 2 parts of the string on each side of the "*", my results are incorrect. In MS Excel, I can use the following formula to solve the problem:

=LEFT(B6,(FIND("*",B6)))

You are just substituting the number of positions with a Find command that looks for the "*", and returns anything left of the "*". Unfortunately, the brilliant programmers at Microsoft, once again, don't have an Excel function in Access. how to recreate that functionality in a table in Access?