1. The problem is to multiply 100 by 700. 2. The formula for multiplication is $a \times b = c$, where $a$ and $b$ are numbers and $c$ is their product. 3. Here, $a = 100$ and $b = 700$. 4. Multiply the numbers: $$100 \times 700 = 70000$$ 5. So, the product of 100 and 700 is 70000.