\(0.25 = \frac{25}{100}\), so:

\[ 0.25 \times 364 = \frac{25}{100} \times 364 = \frac{364 \times 25}{100} \]

Now calculate \(364 \times 25\):

\[ 364 \times 25 = 364 \times (100/4) = 36400 / 4 = 9100 \] \[ \frac{9100}{100} = 91 \]

\(0.06 = 6 \div 100\). So,

\[ 0.06 \times 4500 = \frac{6 \times 4500}{100} = \frac{27000}{100} = 270 \]

We can multiply ignoring the decimal first:

\[ 85 \times 7 = 595 \]

Then divide by 10 (since 8.5 has one decimal place):

\[ 595 \div 10 = 59.5 \]

\(0.45 = \frac{45}{100}\), so:

\[ 0.45 \times 320 = \frac{45 \times 320}{100} = \frac{14400}{100} = 144 \]