**Place Value of 7 in the Given Numbers**

To determine the place value of 7 in the given numbers, we need to understand the positions of digits within a number and their corresponding place values.

**Place Value System:**
The place value system is a way of representing numbers based on the position or place of each digit in a number. Each position represents a power of 10.

**Place Values:**
The place values in the decimal system are multiples of 10. The place values increase from right to left, with each position being 10 times greater than the position to its right.

The place values in the decimal system are as follows:

- Ones (1)
- Tens (10)
- Hundreds (100)
- Thousands (1,000)
- Ten Thousands (10,000)
- Hundred Thousands (100,000)
- Millions (1,000,000)
- Ten Millions (10,000,000)
- Hundred Millions (100,000,000)

**Determining the Place Value of 7:**
Let's consider the given numbers and determine the place value of 7 in each one.

1. 56,74,56,345:
- The comma separates the number into groups of three digits.
- Starting from the right, the first group is the ones place, the second group is the thousands place, the third group is the millions place, and so on.
- In this number, 7 is in the millions place.

2. 567,456,345:
- Similarly, the comma separates the number into groups of three digits.
- Starting from the right, the first group is the ones place, the second group is the thousands place, the third group is the millions place, and so on.
- In this number, 7 is in the hundred millions place.

Therefore, the place value of 7 in the given numbers is:
- 56,74,56,345 -> millions place
- 567,456,345 -> hundred millions place

56,74,56,345
Place value of 7 is 7 × 10,00,000 = 70,00,000 = Seventy Lakhs.
567,456,345
Place value of 7 is 7 × 1,000,000 = 7,000,000 = Seven Million.