Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8a2cdeb368841d4c2d5b6973ad752e4d8e6238973fe0d22f4a465cc92b156da3:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^