To solve the expression 7 x 10^5 / 2 x 10^2, we can simplify the expression by dividing the coefficients and subtracting the exponents.First, we divide 7 by 2, which gives us 3.5.Next, we subtract the exponent of 10^2 from the exponent of 10^5. This gives us 10^3.Therefore, the simplified expression is 3.5 x 10^3.We can also write this in standard notation by multiplying 3.5 by 1000, which gives us 3500.So, 7 x 10^5 / 2 x 10^2 is equal to 3.5 x 10^3 or 3500.