The bet sizes and types are the default values that are used in
the built in database of past results. Two horses to win, seven
for second and nine for third and fourth.
The program ingeniously blends the selection input, bet
size/type input and the odds input to calculate the absolute
optimum combinations for a successful multi investment.
Don't let the user simplicity fool you, there are complicated
calculations going on behind the screen that have stood the test
of time providing windfall collects since the early nineties
when this concept was first developed.