An old numerical problem is as follows:
1 2 3 4 5 6 7 8 9 = 100
Insert mathematical signs (+, -, ×, ÷) wherever you like between the digits to make the expression
equal 100. The digits must remain in the same order and if there is no sign between two or more digits, they combine to
form a number. There are many solutions without brackets or parentheses, for example
1 + 234 × 5 × 6 ÷ 78 + 9 = 100
Here is the current variation of this puzzle:
1 2 3 4 5 6 7 8 9 = 2017
Insert mathematical signs (+, -, ×, ÷) wherever you like between the digits to make the expression
equal 2017. The digits must remain in the same order and if there is no sign between two or more digits, they combine to
form a number. You must use the correct order of operations and you must not use any brackets or parentheses!