At my first stab at this, I can get to 48 78. I prevented utilizing superscript, assuming that that will violate your math rule.

We select the digits:

5, 6, 7

Which can web us the next numbers:

756, 576, 765, 567, 675, 657

Flip the 6 round to get
759, 579, 795, 597, 975, 957

Tilt the 7 ever-so-slightly to get
156, 516, 165, 561, 615, 651

Flip the 6 and tilt the 7 to get
159, 519, 195, 591, 915, 951

Write the 5 very strongly on the again of the paper to point out by way of and get
726, 276, 762, 267, 672, 627

Then the nonsense with the opposite two digits once more:
129, 219, 192, 291, 912, 921
729, 279, 792, 297, 972, 927
126, 216, 162, 261, 612, 621

Then let’s throw within the 1 and a couple of digit numbers to the rely (thanks @WeatherVane) for a bonus 30:

1, 2, 5, 6, 7, 9
12, 15, 16, 19
21, 26, 27, 29
51, 56, 57, 59
61, 62, 65, 67
72, 75, 76, 79
91, 92, 95, 97