What is the largest number you can get by composing an arithmetic expression from the digits 1, 2, 3, 4, 5 and 6 and the signs of four arithmetic operations, if you can use each digit exactly once. An action sign does not have to be placed between any two adjacent digits (it is also not necessary to use all action signs). For example, you can write the expression 234 * 56 + 1. In the answer, you need to write a number that is the result of evaluating your expression.