Predict the result
Multiply three sixteenths by eight ninths.

Set up the model
Cancel common factors before multiplying.
Divide a numerator and denominator by the same nonzero factor.

Work the example
After cancellation, multiply one half by one third.
The simplified product is one sixth.

Check the result
Now multiply seven thirtieths by twelve thirty fifths.
Take eight seconds to think before the answer appears.
[Eight-second silent pause to work; the answer remains hidden.]
The simplified product is two twenty fifths.

Interpret the result
Cancellation preserves the value; it removes common factors, not terms.