Rinse your cast iron kettle clean with warm water. If there are any stubborn rust stains remaining, you can spray them with oven cleaner, wrap the entire kettle in a heavy-duty plastic garbage bag, seal the end off with tape and let sit overnight. Wash the kettle clean with warm water.
Binary numbers and arithmetic let you represent any amount you want using just two digits: 0 and 1. Here are some examples: Decimal 1 is binary 0001. Decimal 3 is binary 0011. Decimal 6 is binary 0110. Decimal 9 is binary 1001. Each digit 1 in a binary number represents a power of two, and each 0 represents zero: 0001 is 2 to the zero power, or 1. 0010 is 2 to the 1st power, or 2. 0100 is 2 to the 2nd power, or 4. 1000 is 2 to the 3rd power, or 8.
So, a binary number with 50 digits could have 1,125,899,906,842,624 different values. Or to put it another way, it could show a number up to 1,125,899,906,842,623 (note: this is one less than the total number of values, because one of the values is 0).