Standard and expanded form
1,528
(1,000)+(500)+(20)+(8)
3\7x1\3
3\21
2x3
6
2,392
(2,000)+(300)+(90)+(2)
6 divided by 1/3
18
3x6
18
1,234
(1,000)+(200)+(30)+(4)
1\3+2\6
4/6
12x2
24
20,397
(20,000)+(300)+(90)+(7)
9\10x2\3
19\30
5x4
20
378,523,600
(300,000,000)+(70,000,000)+(8,000,000)+(500,000)+(20,000)+(3,000)+(600)
1,000\100x300\100
300\1,000