1. The problem is to solve $0.891 - 0.7 \times 0.98$ using BODMAS. 2. BODMAS stands for Brackets, Orders (powers and roots), Division and Multiplication (from left to right), Addition and Subtraction (from left to right). 3. According to BODMAS, multiplication comes before subtraction. 4. First, calculate the multiplication part: $0.7 \times 0.98 = 0.686$. 5. Now subtract this result from $0.891$: $0.891 - 0.686 = 0.205$. 6. Therefore, the final answer is $0.205$.