We can finally complete the multiplication!

Recall that

The and terms don't contribute any extra multiplications, as the computer handles these using the bit shift operator before adding everything up. Therefore we needed just three multiplications, not four!

For the purpose of this exercise however, you should use the answers from previous parts to:

• multiply the first coefficient by 256,
• multiply the middle coefficient by 16,
• take the last coefficient unchanged, and
• add up the results.