()) Is 786,645 divisible by 9 ?

Yes, **786,645** is divisible by **9**. Here's how you can determine this using the divisibility rule for 9: ### Divisibility Rule for 9: A number is divisible by 9 if the **sum of its digits** is also divisible by 9. ### Applying the Rule to 786,645: 1. **Calculate the sum of the digits:** \[ 7 + 8 + 6 + 6 + 4 + 5 = 36 \] 2. **Check if the sum is divisible by 9:** \[ 36 \div 9 = 4 \quad \text{(which is an integer)} \] Since 36 is divisible by 9, the original number **786,645** is also divisible by 9. ### Verification by Division: To further confirm, you can perform the division: \[ 786,645 \div 9 = 87,405 \] Since the division results in a whole number (**87,405**), this confirms that **786,645** is indeed divisible by **9**.