Python question

5.15 Adding numbers within a string Ask the user to input a line of text with the prompt "Enter a string:". The program should extract all numbers (either with a decimal point our without one) from the line of text, compute their sum, and print it as a floating point number with two places to the right of the decimal point. To print the floating point variable ff with exactly two decimal places use print0%2f % m as explained in section 72 of our book, see figure 7.2.2 and the paragraph just above it.) For example, if the input was The sum of 246 and 1025 is the output should be the single line 1271.00 If the input is Fried oysters $12.75, salad $3.35, coffee $1.85, tax 1.36 the output should be 19.31 And if the input is dyuadgh12345agdfklj12 the output should be 12357.00