y = 168912648589.81 × 73020872 -8785174923073793758

Let's calculate the value of the expression:

\[
y = 168912648589.81 \times 73020872 - 8785174923073793758
\]

### Step 1: Multiply the two numbers
First, we'll multiply \( 168912648589.81 \) by \( 73020872 \):

\[
168912648589.81 \times 73020872 = 12330673787951450923.9232
\]

### Step 2: Subtract the large number
Next, we'll subtract \( 8785174923073793758 \) from the result:

\[
12330673787951450923.9232 - 8785174923073793758 = 3545498864877657165.9232
\]

### Final Answer:
\[
y \approx 3,545,498,864,877,657,165.92
\]

Would you like more details or have any questions?

Here are 5 related questions to explore:
1. How does scientific notation help in dealing with large numbers?
2. What is the significance of precision in such large-scale calculations?
3. How do you calculate large powers or roots of large numbers?
4. What are common applications where such large numbers are used?
5. How would rounding affect this calculation?

**Tip:** When working with extremely large or small numbers, it's often helpful to use scientific notation to make the numbers more manageable.

Solve a large number calculation involving the multiplication of 168912648589.81 by 73020872, followed by subtracting 8785174923073793758. The step-by-step guide covers the key arithmetic concepts of multiplication and subtraction, suitable for students in Grades 9-12.

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