1×21×20×21×21×21×21×2

The expression 1×21×20×21×21×21×21×2 is a mathematical expression that involves a sequence of multiplications. When evaluated, it results in a specific numerical value. The order of operations dictates that the multiplications are performed from left to right. Therefore, the calculation proceeds as follows: 1 multiplied by 21 equals 21. This result is then multiplied by 20, yielding 420. The subsequent multiplication by 21 results in 8820. Continuing this process, multiplying 8820 by 21 gives 185220. The next multiplication by 21 produces 3889620. Multiplying this by 21 yields 81682020. Finally, multiplying 81682020 by 2 gives the final result of 163364040. This sequence of multiplications demonstrates the commutative and associative properties of multiplication, meaning the order and grouping of the numbers do not alter the final product. The expression itself is a straightforward arithmetic calculation.