1. The problem is to subtract 89.56 from 142.007. 2. The subtraction formula is $a - b$, where $a = 142.007$ and $b = 89.56$. 3. Align the numbers by the decimal point: $$\begin{array}{r} 142.007 \\ -\ 89.560 \\ \hline \end{array}$$ 4. Perform the subtraction digit by digit from right to left: - Thousandths place: $7 - 0 = 7$ - Hundredths place: $0 - 6$ cannot subtract, borrow 1 from tenths place. - Tenths place after borrowing: $0$ becomes $9$, so $9 - 6 = 3$ - Hundredths place after borrowing: $10 - 6 = 4$ - Units place and above: $142 - 89 = 53$ 5. Combine the results: $53.447$ 6. Therefore, $142.007 - 89.56 = 53.447$.