Welcome! Let’s start immediately. Solve the following problem. Then read the instructions below it to move on.

You should have a 4 digit number after rounding and multiplying by 1000. Substitute that number in the following url at the end in place of nnnn:


Copy-paste the url in your browser and if you solved the question correctly, you’ll find the next question. On the other hand, if you reach a “404: Page not found”, that means you made a mistake…