Two million three hundred eight thousand five hundred and three written in numerals is

1.   ?    238 503
2.   ?    2 308 503
3.   ?    2 308 530
4.   ?    2 380 503

3 576 855 + 385 288 + 6 475 =

1.   ?    3 828 218
2.   ?    3 876 168
3.   ?    3 968 618
4.   ?    4 024 128

What is the difference between 1 240 300 and 528 736 ?

1.   ?    711 564
2.   ?    716 324
3.   ?    721 284
4.   ?    724 134