Solve the Division Chain: 90÷(139.5÷15.5) Step-by-Step Solution

To solve this problem, we'll follow these steps:

• Step 1: Evaluate the expression inside the parentheses: $139.5:15.5$.
• Step 2: Use the result from Step 1 in the outer division operation $90 \div (\text{result from Step 1})$.

Let's work through each step:

**Step 1:** Compute $139.5 \div 15.5$.
To divide 139.5 by 15.5, you perform the division as follows: $139.5 \div 15.5 = 9$ This is confirmed through straightforward calculation (or using a calculator for precision).

**Step 2:** Now substitute this result into the next operation.
So, $90 \div 9 = 10$.

Thus, the solution to the problem $90:(139.5:15.5)$ is $10$.