1. The problem is to find the product of 90 and 70. 2. The formula for multiplication is simply $a \times b = c$, where $a$ and $b$ are the numbers to multiply. 3. Multiply 90 by 70: $$90 \times 70$$ 4. Calculate the product: $$90 \times 70 = 6300$$ 5. Therefore, the answer is 6300.