So, I guess the empty box is the product. So, 0.53 * 0.67 = ? is the equation we need to solve. First, you need to ignore the decimals. All you have to do is multiply like normal. 7 times 3 then 7 times 5. Then you would add a zero and multiply 6 by 3 and 5. This will leave you with: 3551. Now, count as you take out the decimals. You would need to take it out 2 times from each number, so you need to put it back in 4 times. So, the answer is 0.3551. Hope this helped!