Write the word form for 3,152,308,726 what is the value of the underlined digit

The number is

"Three billion,
             one hundred fifty-two million,
                                          three hundred eight thousand,
                                                                           seven hundred twenty-six".

There is no underlined digit on my screen.

Nucleus for question ome

Answerapplying a direct current to a non magnetic material in order to create a electromagnetic field; plz check first good luck;