You can make all your scientific operations without the zero. Click on the squares to enter your numbers in roman form. The result will appear on 'conseqvvntvr'. The used form is a fractional form. Totivs is the entire number, then you enter the fraction in Pars. You can choose DEG or RAD, you can also use i and Pi. 'FRA' is there to show the result in fractional form, 'FRM', shows the result in 100000000th form (like the traditional numbers after zero). A number with Factors M activated is multiplied by 1000 and is shown in traditional roman notation. A number with Factors C activated is multiplied by 100 and is also shown in roman notation. You can use both Factors C and Factors M to multiply the number by 100000. Then you can adapt by yourself the result with the other notation (femto, tera), to have the correct result.
Use the COP button to copy your result and the GLV buttons will appear to paste it. The MR button appears when the variable is stored and can be used to free the memory.
Learn roman numerals on the website https://roman.mgnambroise.com