Function format

test/compute-engine/latex-syntax/numbers.test.ts:424–425

(num: string)

    expect(reformat('12420')).toMatchInlineSnapshot(`12\\,420`);
    expect(reformat('7000')).toMatchInlineSnapshot(`7\\,000`);
    expect(reformat('12420\\times10^{7}')).toMatchInlineSnapshot(
      `124\\,200\\,000\\,000`
    );
    expect(reformat('12420.54\\times10^{7}')).toMatchInlineSnapshot(
      `124\\,205\\,400\\,000`