Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 77498c1939154ca8d6a9d243f8f5cfdd7326f5c8a928d51f76f37f13cc67b551:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^