Logic Masters Deutschland e.V.

Rules.
1.Aroundoku uses 6 of the digits 0-9 to be determined by the solver. Place one copy of each digit determined in each Row/Column/Box.
2.The number on the black cells is the result of the non-black cells that`s orthogonally adjacent to it using only one of the mathematical operations(addition, subtraction, multiplication, division).The mathematical operation used is to be determined by the solver.
*With subtraction sums, you must subtract the smaller numbers from the largest number. With division sums, you must divide the largest number by the smaller numbers. Numbers may repeat around a black cell, as long as it is allowed by other rules.

Here`s the puzzle:

Penpa+

. Enjoy!
Answer check enabled,(it`ll work if the digits are put in via Sudoku mode, and put in white cells only) and added some blank areas outside grid for possible note taking.
Finally, huge thanks to RockyRoer for test solving the puzzle in CtC discord server.