1. The problem asks us to multiply by 8 the difference of 2103 and 987. 2. First, find the difference: $$2103 - 987$$. 3. Calculate the difference: $$2103 - 987 = 1116$$. 4. Now multiply this difference by 8: $$8 \times 1116$$. 5. Perform the multiplication: $$8 \times 1116 = 8928$$. 6. Therefore, the final answer is $$8928$$.